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      <title>9A ĐƯỜNG ĐẾN THÀNH CÔNG by Nguyen Long</title>
      <link>https://padlet.com/drlonguyen/HOA9A</link>
      <description>WE ARE THE CHAMPOINS</description>
      <language>en-us</language>
      <pubDate>2021-10-04 09:49:43 UTC</pubDate>
      <lastBuildDate>2023-01-30 17:33:17 UTC</lastBuildDate>
      <webMaster>hello@padlet.com</webMaster>
      <image>
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      <item>
         <title>bài 3</title>
         <author>drlonguyen</author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1798258560</link>
         <description><![CDATA[]]></description>
         <enclosure url="https://padlet-uploads.storage.googleapis.com/1320696264/e74a7c847257933df0e353c33d949557/image.png" />
         <pubDate>2021-10-07 01:29:22 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1798258560</guid>
      </item>
      <item>
         <title>Phạmminh hằng</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1798263763</link>
         <description><![CDATA[<div>Phương trình hóa học<br><br>
</div><div>a) MgO + 2HNO<sub>3</sub> → Mg(NO<sub>3</sub>)<sub>2</sub> + H<sub>2</sub>O<br><br>
</div><div>b) CuO + 2HCl → CuCl<sub>2</sub> + H<sub>2</sub>O<br><br>
</div><div>c) Al<sub>2</sub>O<sub>3</sub> + 3H<sub>2</sub>SO<sub>4</sub> → Al<sub>2</sub>(SO<sub>4</sub>)<sub>3</sub> + 3H<sub>2</sub>O<br><br>
</div><div>d) Fe + 2HCl → FeCl<sub>2</sub> + H<sub>2<br></sub><br>
</div><div>e) Zn + H<sub>2</sub>SO<sub>4</sub> → ZnSO<sub>4</sub> + H<sub>2<br></sub><br>
</div>]]></description>
         <enclosure url="" />
         <pubDate>2021-10-07 01:31:32 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1798263763</guid>
      </item>
      <item>
         <title>Đào</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1798264966</link>
         <description><![CDATA[<div>a,MgO+HNO3 -&gt; Mg(NO3)2 +H2O</div>]]></description>
         <enclosure url="" />
         <pubDate>2021-10-07 01:32:02 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1798264966</guid>
      </item>
      <item>
         <title>Thùy My</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1798267597</link>
         <description><![CDATA[<div>a) MgO+2HNO3--&gt; Mg(NO3)2+H2O<br>b) CuO+2HCl--&gt; CuCl2+ H2O<br>c) Al2O3+3H2SO4--&gt; Al2(SO4)3 +3H2O<br>d) Fe+ 2HCl--&gt; FeCl2+H2<br>e) Zn+H2SO4--&gt;ZnSO4+H2</div>]]></description>
         <enclosure url="" />
         <pubDate>2021-10-07 01:33:05 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1798267597</guid>
      </item>
      <item>
         <title>Phương Thùy</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1798269012</link>
         <description><![CDATA[<div>Bài 3 trang 14<br>a) MgO + 2HNO3 --&gt; Mg(NO3)2 + H2O<br>b) CuO + 2HCl --&gt; CuCl2 + H2O<br>c) Al2O3 + 3H2SO4 --&gt; Al2(SO4)3 + 3H2O<br>d) Fe + 2HCl --&gt; FeCl2 + H2<br>e) Zn + H2SO4 --&gt; ZnSO4 + H2</div>]]></description>
         <enclosure url="" />
         <pubDate>2021-10-07 01:33:36 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1798269012</guid>
      </item>
      <item>
         <title>Minh Thảo </title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1798269013</link>
         <description><![CDATA[]]></description>
         <enclosure url="https://padlet-uploads.storage.googleapis.com/1365874579/3eb4ac14c75da5fdb0a260751ba3267f/20211007_083254.jpg" />
         <pubDate>2021-10-07 01:33:36 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1798269013</guid>
      </item>
      <item>
         <title>Ngọc Anh</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1798269294</link>
         <description><![CDATA[<div>bài 3/14<br>a. MgO + 2HNO3 -&gt; Mg(NO3)2 + H2O<br>b. CuO + 2HCl -&gt; CuCl2 + H2O<br>c. Al2O3 + 3H2SO4 -&gt; Al2(SO4)3 + 3H2O<br>d. Fe + 2HCl -&gt; FeCl2 + H2<br>e. Zn + H2SO4 -&gt; ZnSO4 + H2</div>]]></description>
         <enclosure url="" />
         <pubDate>2021-10-07 01:33:43 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1798269294</guid>
      </item>
      <item>
         <title>Nguyễn Thanh Hiền</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1798270584</link>
         <description><![CDATA[]]></description>
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         <pubDate>2021-10-07 01:34:13 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1798270584</guid>
      </item>
      <item>
         <title>Vũ Thị Minh Anh</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1798270649</link>
         <description><![CDATA[<div>a) MgO + 2HNO3 ----&gt;Mg(NO3)2 + H2O       b) CuO + 2HCl -----&gt; CuCl2 +H2O                      c) Al2O3 + 3H2SO4 -----&gt; Al2(SO4)3 +3H2O  d) Fe + 2HCl -----&gt;FeCl2 +H2                            e) Zn +H2SO4-----&gt; ZnSO4 +H2       </div>]]></description>
         <enclosure url="" />
         <pubDate>2021-10-07 01:34:14 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1798270649</guid>
      </item>
      <item>
         <title>Nguyễn Đức Chí Dũng</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1798271068</link>
         <description><![CDATA[]]></description>
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         <pubDate>2021-10-07 01:34:21 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1798271068</guid>
      </item>
      <item>
         <title>Duyên</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1798271118</link>
         <description><![CDATA[<div>a) MgO + HNO3 -----&gt; H2O + Mg(NO3)2<br>b) CuO + HCl ------&gt; CuCl2 + H2O<br>c) Al2O3 + H2SO4 -----&gt; AlSO4 + H2O<br>d) Fe+ HCl -----&gt; FeCl2 + H2<br>e) Zn + H2SO4 -----&gt; ZnSO2 + H2<br><br>
</div>]]></description>
         <enclosure url="" />
         <pubDate>2021-10-07 01:34:22 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1798271118</guid>
      </item>
      <item>
         <title>Ngô Nhật My</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1798271138</link>
         <description><![CDATA[]]></description>
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         <pubDate>2021-10-07 01:34:23 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1798271138</guid>
      </item>
      <item>
         <title>Phạm Chuyên</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1798271223</link>
         <description><![CDATA[]]></description>
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         <pubDate>2021-10-07 01:34:25 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1798271223</guid>
      </item>
      <item>
         <title>Vũ Trung Hiếu</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1798271294</link>
         <description><![CDATA[]]></description>
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         <pubDate>2021-10-07 01:34:26 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1798271294</guid>
      </item>
      <item>
         <title>Vũ Nguyễn Quỳnh Nga</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1798271320</link>
         <description><![CDATA[<div>a)MgO + 2HNO<sub>3</sub> → Mg(NO<sub>3</sub>)<sub>2</sub> + H<sub>2</sub>O<br>b) CuO + 2HCl → CuCl<sub>2</sub> + H<sub>2</sub>O<br>c) Al<sub>2</sub>O<sub>3</sub> + 3H<sub>2</sub>SO<sub>4</sub> → Al<sub>2</sub>(SO<sub>4</sub>)<sub>3</sub> + 3H<sub>2</sub>O<br>d) Fe + 2HCl → FeCl<sub>2</sub> + H<sub>2</sub> <br>e) Zn + H<sub>2</sub>SO<sub>4</sub> → ZnSO<sub>4</sub> + H<sub>2</sub> </div><div><br></div>]]></description>
         <enclosure url="" />
         <pubDate>2021-10-07 01:34:27 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1798271320</guid>
      </item>
      <item>
         <title>Phạm Quốc Đại</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1798271324</link>
         <description><![CDATA[<div>
<strong>a)</strong> MgO + 2HNO<sub>3</sub> → Mg(NO<sub>3</sub>)<sub>2</sub> + H<sub>2</sub>O<br><strong>b)</strong> CuO + 2HCl → CuCl<sub>2</sub> + H<sub>2</sub>O&nbsp;                          <strong>c)</strong> Al<sub>2</sub>O<sub>3</sub> + 3H<sub>2</sub>SO<sub>4</sub> → Al<sub>2</sub>(SO<sub>4</sub>)<sub>3</sub> + 3H<sub>2</sub>O                   <strong>d)</strong> Fe + 2HCl → FeCl<sub>2</sub> + H<sub>2</sub> ↑                       <strong>e)</strong> Zn + H<sub>2</sub>SO<sub>4(loãng)</sub> → ZnSO<sub>4</sub> + H<sub>2</sub> ↑ .</div>]]></description>
         <enclosure url="" />
         <pubDate>2021-10-07 01:34:27 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1798271324</guid>
      </item>
      <item>
         <title>Nguyễn Hồng Anh</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1798272113</link>
         <description><![CDATA[<div>a) MgO + 2HNO3 -&gt; Mg(NO3)2<br>b)CuO + 2HCl -&gt; CuCl2 + H2O<br>c) Al2O3 + 3H2SO4-&gt; Al2(SO4)3 +3H2O<br>d) Fe +HCl -&gt; FeCl2 + H2<br>e) Zn + H2SO4 -&gt; ZnSO4 + H2<br><br>
</div>]]></description>
         <enclosure url="" />
         <pubDate>2021-10-07 01:34:47 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1798272113</guid>
      </item>
      <item>
         <title>vũ hải anh</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1798272788</link>
         <description><![CDATA[]]></description>
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         <pubDate>2021-10-07 01:35:03 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1798272788</guid>
      </item>
      <item>
         <title>Hoa</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1798272896</link>
         <description><![CDATA[]]></description>
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         <pubDate>2021-10-07 01:35:06 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1798272896</guid>
      </item>
      <item>
         <title>Ng Hải Anh</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1798272920</link>
         <description><![CDATA[<div>a) MgO + 2HNO3 -&gt; Mg(NO3)2 +&nbsp; 3H2O<br>b)CuO + 2HCl -&gt; CuCl2 + H2O<br>c)Al2O3 + 3 H2SO4-&gt;Al2(SO4)3 +3H2O<br>d)Fe+ 2 HCl -&gt;FeCl2+H2<br>e)Zn+ H2SO4-&gt; ZnSO4+H2</div>]]></description>
         <enclosure url="" />
         <pubDate>2021-10-07 01:35:07 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1798272920</guid>
      </item>
      <item>
         <title>Duy Anh</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1798272961</link>
         <description><![CDATA[]]></description>
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         <pubDate>2021-10-07 01:35:08 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1798272961</guid>
      </item>
      <item>
         <title>Mai Linh</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1798273191</link>
         <description><![CDATA[<div>a) MgO + 2HNO3---&gt;Mg(NO3)2 + H2O<br>b)CuO + 2HCl ---&gt;CuCl2 +H2O<br>c)Al2O3 + 3H2SO4---&gt;Al2(SO4)3 + 3H2O<br>đ)Fe+2HCl--&gt;FeCl2+H2<br>e)Zn + H2SO4(loãng)---&gt;ZnSO4+H2</div>]]></description>
         <enclosure url="" />
         <pubDate>2021-10-07 01:35:13 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1798273191</guid>
      </item>
      <item>
         <title>Trúc Quỳnh</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1798273233</link>
         <description><![CDATA[<div>CuO+HCL=&gt; CuCL</div>]]></description>
         <enclosure url="" />
         <pubDate>2021-10-07 01:35:14 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1798273233</guid>
      </item>
      <item>
         <title>Duy</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1798273288</link>
         <description><![CDATA[<div>CuO+2HCl==&gt;CuCl2+H2O<br>Al2O3+3H2SO4==&gt;Al2(SO4)3+3H2O<br>FE+2HCl==&gt;FECl2+H2<br>MgO+2HNO3==&gt;MG(NO3)2+H2O</div>]]></description>
         <enclosure url="" />
         <pubDate>2021-10-07 01:35:15 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1798273288</guid>
      </item>
      <item>
         <title></title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1798273323</link>
         <description><![CDATA[<div>Quốc Khánh<br>MgO+ 2HNO3 ——&gt; Mg(NO3)2+H2O<br>CuO+2HCL—-&gt;CuCl2+ H20<br>Al2O3+3H2SO4—&gt; Al2(SO4)3+3H2O<br>Fe + 2HCL—&gt; FeCl2 +H2<br>ZN+H2SO4 ( loãng) —-&gt; ZNSO4+H2O</div>]]></description>
         <enclosure url="" />
         <pubDate>2021-10-07 01:35:16 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1798273323</guid>
      </item>
      <item>
         <title>Ninh</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1798273341</link>
         <description><![CDATA[]]></description>
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         <pubDate>2021-10-07 01:35:17 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1798273341</guid>
      </item>
      <item>
         <title>Kiều Anh </title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1798273393</link>
         <description><![CDATA[<div>MgO +HNO3 -&gt; Mg(HNO3)2 + H2O<br>CuO + HCl -&gt; CuCl2 + H2O&nbsp;<br><br>
</div>]]></description>
         <enclosure url="" />
         <pubDate>2021-10-07 01:35:18 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1798273393</guid>
      </item>
      <item>
         <title>Việt Trang</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1798273521</link>
         <description><![CDATA[<div>a)MgO+2HNO3-&gt;Mg(NO3)2+H2O<br>b)CuO+2HCl-&gt;CuCl2+H2O<br>c)Al2O3+3H2SO4-&gt;Al2(SO4)3+3H2O<br>d)</div>]]></description>
         <enclosure url="" />
         <pubDate>2021-10-07 01:35:22 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1798273521</guid>
      </item>
      <item>
         <title>Phương</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1798273534</link>
         <description><![CDATA[<div>bài3/14<br>a,MgO+2HNO3 -&gt;Mg(NO3)2+H2O<br>b,CuO+2HCl-&gt;CuCl2+H2O<br>c,Al2O3+3H2SO4-&gt;Al2(SO4)3+3H2O<br>d,Fe+2HCl-&gt;FeCl2+H2<br>e,Zn+H2SO4-&gt;ZnSO4+H2</div>]]></description>
         <enclosure url="" />
         <pubDate>2021-10-07 01:35:22 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1798273534</guid>
      </item>
      <item>
         <title>Ngọc Anh</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1798306034</link>
         <description><![CDATA[<div>bài 1 trang 19</div>]]></description>
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         <pubDate>2021-10-07 01:48:00 UTC</pubDate>
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      <item>
         <title>nguyễn hải anh</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1798306373</link>
         <description><![CDATA[]]></description>
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         <pubDate>2021-10-07 01:48:08 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1798306373</guid>
      </item>
      <item>
         <title>vũ hải anh</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1798306779</link>
         <description><![CDATA[]]></description>
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         <pubDate>2021-10-07 01:48:17 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1798306779</guid>
      </item>
      <item>
         <title>Phương</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1798306811</link>
         <description><![CDATA[]]></description>
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         <pubDate>2021-10-07 01:48:18 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1798306811</guid>
      </item>
      <item>
         <title>Hoa </title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1798306934</link>
         <description><![CDATA[]]></description>
         <enclosure url="https://padlet-uploads.storage.googleapis.com/1365878826/1183925280cf69286dee2d7a9cf0e446/16335711973438393380442742931302.jpg" />
         <pubDate>2021-10-07 01:48:21 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1798306934</guid>
      </item>
      <item>
         <title>Duy Anh</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1798307212</link>
         <description><![CDATA[]]></description>
         <enclosure url="https://padlet-uploads.storage.googleapis.com/1304361630/7788dbfba2926e19f3fc1caaea3083d0/16335712516313445223896748311058.jpg" />
         <pubDate>2021-10-07 01:48:27 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1798307212</guid>
      </item>
      <item>
         <title>Phạm Minh Hằng</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1798307669</link>
         <description><![CDATA[<div>Bài 1 tr19<br>a) Khí cháy được trong không khí là hiđro PTHH<br><br>
</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Zn + 2HCl&nbsp; → ZnCl<sub>2</sub> + H<sub>2<br></sub><br>
</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Zn + H<sub>2</sub>SO<sub>4</sub>&nbsp; → ZnSO<sub>4</sub> + H<sub>2<br></sub><br>
</div><div>b) Dung dịch có màu xanh lam là dung dịch muối đồng (II)PTHH<br><br>
</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; CuO&nbsp; + 2HCl → CuCl<sub>2</sub> + H<sub>2</sub>O<br><br>
</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; CuO + H<sub>2</sub>SO<sub>4</sub> → CuSO<sub>4</sub> + H<sub>2</sub>O<br><br>
</div><div>c) Chất kết tủa trắng không tan trong nước và axit là BáO4  PTHH<sub><br></sub>&nbsp; &nbsp; BaCl<sub>2</sub> + H<sub>2</sub>SO<sub>4</sub> → 2HCl + BaSO<sub>4<br></sub><br>
</div><div>d) Dung dịch không màu là muối kẽm.PTHH<br><br>
</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; ZnO + 2HCl → ZnCl<sub>2</sub> + H<sub>2</sub>O<br><br>
</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; ZnO + H<sub>2</sub>SO<sub>4</sub> → ZnSO<sub>4</sub> + H<sub>2</sub>O<br><br>
</div>]]></description>
         <enclosure url="" />
         <pubDate>2021-10-07 01:48:38 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1798307669</guid>
      </item>
      <item>
         <title>Vũ Phương Thùy</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1798307842</link>
         <description><![CDATA[<div>bài 1 trang 19</div>]]></description>
         <enclosure url="https://padlet-uploads.storage.googleapis.com/1365884510/0abbe704871523e52501be6d472e13cb/20211007_084656.jpg" />
         <pubDate>2021-10-07 01:48:41 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1798307842</guid>
      </item>
      <item>
         <title>Duy</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1798308604</link>
         <description><![CDATA[<div>a,Zn+2HCl--&gt;ZnCl2+H2<br>b,CuO+2HCl--&gt;CuCl2+H2O<br>c,BaCl2+H2SO4--&gt;BaSO4+2HCl<br>d,Zn+2HCl--&gt;ZnCl2+H2O</div>]]></description>
         <enclosure url="" />
         <pubDate>2021-10-07 01:48:59 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1798308604</guid>
      </item>
      <item>
         <title>Nga (bài 1/19)</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1798309179</link>
         <description><![CDATA[<div>a) Chất khí cháy được trong không khí là khí H<sub>2</sub>.<br>Zn + 2HCl → ZnCl<sub>2</sub> + H<sub>2</sub> <br>Zn + H<sub>2</sub>SO<sub>4</sub> → ZnSO<sub>4</sub> + H<sub>2</sub> <br>b) Dung dịch có màu xanh lam: CuCl<sub>2</sub> , CuSO<sub>4</sub>.<br>CuO + 2HCl → CuCl<sub>2 (xanh lam)</sub> + H<sub>2</sub>O<br>CuO + H<sub>2</sub>SO<sub>4</sub> → CuSO<sub>4 (xanh lam)</sub> + H<sub>2</sub>O<br>c)Chất kết tủa trắng không tan trong nước và axit là BaSO<sub>4</sub>.<br>BaCl<sub>2</sub> + H<sub>2</sub>SO<sub>4</sub> → BaSO<sub>4</sub> ↓ + 2HCl<br><br>
</div>]]></description>
         <enclosure url="" />
         <pubDate>2021-10-07 01:49:13 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1798309179</guid>
      </item>
      <item>
         <title>Vũ Phương Thùy</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1798311567</link>
         <description><![CDATA[<div>b1 tr19</div>]]></description>
         <enclosure url="https://padlet-uploads.storage.googleapis.com/1365884510/1ff2ba447c670b2315089f89c8784cda/20211007_084656.jpg" />
         <pubDate>2021-10-07 01:50:04 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1798311567</guid>
      </item>
      <item>
         <title>Ngô Nhật My</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1798311911</link>
         <description><![CDATA[]]></description>
         <enclosure url="https://padlet-uploads.storage.googleapis.com/1304372351/66b9b3fc50692c6ddca787368ac5d852/16335712272757553275197502695622.jpg" />
         <pubDate>2021-10-07 01:50:12 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1798311911</guid>
      </item>
      <item>
         <title>đào</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1798312273</link>
         <description><![CDATA[]]></description>
         <enclosure url="https://padlet-uploads.storage.googleapis.com/1365873213/6882f081ffbf425516e44169a37009b5/image.jpg" />
         <pubDate>2021-10-07 01:50:20 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1798312273</guid>
      </item>
      <item>
         <title>Mạnh </title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1798312632</link>
         <description><![CDATA[<div>bài 2 (sgk trang 19 )<br>A, Chất khí cháy được trong không khí là khí H<sub>2</sub>.<br><br>
</div><div>Zn + 2HCl → ZnCl<sub>2</sub> + H<sub>2</sub> ↑<br><br>
</div><div>Zn + H<sub>2</sub>SO<sub>4</sub> → ZnSO<sub>4</sub> + H<sub>2</sub> ↑<br>B , Dung dịch có màu xanh lam: CuCl<sub>2</sub> , CuSO<sub>4</sub>.<br><br>
</div><div>CuO + 2HCl → CuCl<sub>2 (xanh lam)</sub> + H<sub>2</sub>O<br><br>
</div><div><br></div><div>CuO + H<sub>2</sub>SO<sub>4</sub> → CuSO<sub>4 (xanh lam)</sub> + H<sub>2</sub>O<br>C,Chất kết tủa trắng không tan trong nước và axit là BaSO<sub>4</sub>.<br><br>
</div><div>BaCl<sub>2</sub> + H<sub>2</sub>SO<sub>4</sub> → BaSO<sub>4</sub> ↓ + 2HCl<br>D,<br>Dung dịch không màu là: ZnCl<sub>2</sub>, ZnSO<sub>4</sub>.<br><br>
</div><div>ZnO + 2HCl → ZnCl<sub>2</sub> + H<sub>2</sub>O<br><br>
</div><div>ZnO + H<sub>2</sub>SO<sub>4</sub> → ZnSO<sub>4</sub> + H<sub>2</sub>O.<br><br>
</div><div>
<br><br>
</div><div>
<br><br>
</div>]]></description>
         <enclosure url="" />
         <pubDate>2021-10-07 01:50:28 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1798312632</guid>
      </item>
      <item>
         <title></title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1798312637</link>
         <description><![CDATA[<div>) Khí cháy được trong không khí là hiđro</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Zn + 2HCl&nbsp; → ZnCl<sub>2</sub> + H<sub>2</sub>
</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Zn + H<sub>2</sub>SO<sub>4</sub>&nbsp; → ZnSO<sub>4</sub> + H<sub>2<br></sub><br>
</div><div>b) Dung dịch có màu xanh lam là dung dịch muối đồng (II)</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; CuO&nbsp; + 2HCl → CuCl<sub>2</sub> + H<sub>2</sub>O</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; CuO + H<sub>2</sub>SO<sub>4</sub> → CuSO<sub>4</sub> + H<sub>2</sub>O<br><br>
</div><div>c) Chất kết tủa trắng không tan trong nước và axit là BaSO<sub>4<br></sub><br>
</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; BaCl<sub>2</sub> + H<sub>2</sub>SO<sub>4</sub> → 2HCl + BaSO<sub>4<br></sub><br>
</div><div>d) Dung dịch không màu là muối kẽm.</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; ZnO + 2HCl → ZnCl<sub>2</sub> + H<sub>2</sub>O</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;<br>Minh Thư</div><div><br></div><div>
<br><br><br>
</div>]]></description>
         <enclosure url="" />
         <pubDate>2021-10-07 01:50:28 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1798312637</guid>
      </item>
      <item>
         <title>Thùy My</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1798312697</link>
         <description><![CDATA[<div>a) Zn+2HCl=&gt;ZnCl2+H2<br>&nbsp; &nbsp; Zn+H2SO4=&gt;ZnSO4+H2<br>b)CuO+2HCl=&gt;CuCl2+H2O<br>&nbsp; &nbsp; CuO+H2SO4=&gt;CuSO4+H2O<br>c)BaCl2+H2SO4=&gt;BaSO4</div>]]></description>
         <enclosure url="" />
         <pubDate>2021-10-07 01:50:30 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1798312697</guid>
      </item>
      <item>
         <title>Phương Thảo</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1798312840</link>
         <description><![CDATA[<div>b1/19<br>a)Khí cháy trong kk là hidro<br>Zn+2HCl-&gt;ZnCl2+H2<br>Zn+H2SO4-&gt;ZnSO4+H2<br>b)Dd có màu xanh lam là dd muối đồng<br>CuO+2HCl-&gt;CuCl2+H2O<br>CuO+H2SO4-&gt;CuSO4+H2O<br>C)Chất kết tủa k tan trong nc và axit lad BaSO4<br>BaCl2+H2SO4_&gt;2HCl+Baso4<br>d)DD k màu là muối kẽm<br><br>ZnO+2HCl-&gt;ZnCl2+H2O<br>ZnO+H2SO4-&gt;ZnSO4+H2O<br><br>
</div>]]></description>
         <enclosure url="" />
         <pubDate>2021-10-07 01:50:33 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1798312840</guid>
      </item>
      <item>
         <title>Phương Thảo</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1798342215</link>
         <description><![CDATA[<div>Eo</div>]]></description>
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         <pubDate>2021-10-07 02:02:11 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1798342215</guid>
      </item>
      <item>
         <title>Phương</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1798342783</link>
         <description><![CDATA[]]></description>
         <enclosure url="https://padlet-uploads.storage.googleapis.com/1365888460/ac4241d0e83f2fdf9557d02b2210f398/16335721203583167604081131382355.jpg" />
         <pubDate>2021-10-07 02:02:26 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1798342783</guid>
      </item>
      <item>
         <title></title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1798343231</link>
         <description><![CDATA[<div>Phương Thảo</div>]]></description>
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         <pubDate>2021-10-07 02:02:37 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1798343231</guid>
      </item>
      <item>
         <title>nguyễn hải anh</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1798345914</link>
         <description><![CDATA[]]></description>
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         <pubDate>2021-10-07 02:03:39 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1798345914</guid>
      </item>
      <item>
         <title>Hoa</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1798345998</link>
         <description><![CDATA[]]></description>
         <enclosure url="https://padlet-uploads.storage.googleapis.com/1365878826/394687c5a95afcf01f9b054578b71248/16335722027931740883117542193047.jpg" />
         <pubDate>2021-10-07 02:03:41 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1798345998</guid>
      </item>
      <item>
         <title>Khánh</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1798346543</link>
         <description><![CDATA[]]></description>
         <enclosure url="https://padlet-uploads.storage.googleapis.com/1365877380/894a246f8135b1a4b6b69411d5dcf1ba/image.jpg" />
         <pubDate>2021-10-07 02:03:55 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1798346543</guid>
      </item>
      <item>
         <title>Minh Thảo</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1798346601</link>
         <description><![CDATA[]]></description>
         <enclosure url="https://padlet-uploads.storage.googleapis.com/1365874579/4bdb95b5850e77a8cc06011756e246ec/20211007_090305.jpg" />
         <pubDate>2021-10-07 02:03:56 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1798346601</guid>
      </item>
      <item>
         <title>đào</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1798347279</link>
         <description><![CDATA[]]></description>
         <enclosure url="https://padlet-uploads.storage.googleapis.com/1365873213/5f8a35900b91b575c9f0152176294082/image.jpg" />
         <pubDate>2021-10-07 02:04:13 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1798347279</guid>
      </item>
      <item>
         <title>Ninh</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1798347830</link>
         <description><![CDATA[]]></description>
         <enclosure url="https://padlet-uploads.storage.googleapis.com/1365871366/2fb842f8687e109279fcc02fe436deee/16335722297613153666552999869280.jpg" />
         <pubDate>2021-10-07 02:04:28 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1798347830</guid>
      </item>
      <item>
         <title>Phương Thùy</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1798349134</link>
         <description><![CDATA[<div>b6 tr19</div>]]></description>
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         <pubDate>2021-10-07 02:05:02 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1798349134</guid>
      </item>
      <item>
         <title></title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1798349279</link>
         <description><![CDATA[<div>Tài</div>]]></description>
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         <pubDate>2021-10-07 02:05:06 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1798349279</guid>
      </item>
      <item>
         <title>vũ hải anh</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1798349436</link>
         <description><![CDATA[]]></description>
         <enclosure url="https://padlet-uploads.storage.googleapis.com/1365870995/668fc29239e3548daea1c21adb4be693/20211007_090405.jpg" />
         <pubDate>2021-10-07 02:05:10 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1798349436</guid>
      </item>
      <item>
         <title>Nguyễn Thanh Hiền</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1798349739</link>
         <description><![CDATA[]]></description>
         <enclosure url="https://padlet-uploads.storage.googleapis.com/1304354731/b75a3d4fc235b8925bead4e0f0bee7ab/IMG_20211007_090407.jpg" />
         <pubDate>2021-10-07 02:05:17 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1798349739</guid>
      </item>
      <item>
         <title>Mai Linh</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1798350470</link>
         <description><![CDATA[]]></description>
         <enclosure url="https://padlet-uploads.storage.googleapis.com/1365871142/5498398e655f7f27c5c7286e91e5e06e/IMG_20211007_090505.jpg" />
         <pubDate>2021-10-07 02:05:37 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1798350470</guid>
      </item>
      <item>
         <title></title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1798350761</link>
         <description><![CDATA[<div>Minh Thư</div>]]></description>
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         <pubDate>2021-10-07 02:05:44 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1798350761</guid>
      </item>
      <item>
         <title>Phạm Mình Hằng</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1798351223</link>
         <description><![CDATA[]]></description>
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         <pubDate>2021-10-07 02:05:55 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1798351223</guid>
      </item>
      <item>
         <title>Ngọc Anh</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1798351614</link>
         <description><![CDATA[]]></description>
         <enclosure url="https://padlet-uploads.storage.googleapis.com/1304373855/2839ac856ea75e5edce671c884573cc0/FEEF4F72_73A7_4E13_94EA_537D43BABC4C.jpeg" />
         <pubDate>2021-10-07 02:06:05 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1798351614</guid>
      </item>
      <item>
         <title>Nguyễn Đức Chí Dũng </title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1798352058</link>
         <description><![CDATA[<div>a, PTHH: Fe+2HCl --&gt; FeCl2+H2<br>b, nH2= V/22,4=3,36/22,4=0,15(mol)<br>pt: nFe=nH2=0,15(mol)-&gt;=0,15*56 =8,4(g)<br>c, Theo pt: nHCl= 2*nFe=2*0,15=0,3(mol), VHCl=50ml=0,05l. CM(HCl) =n/V =0,3/0,05=6(M)<br><br>
</div>]]></description>
         <enclosure url="" />
         <pubDate>2021-10-07 02:06:16 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1798352058</guid>
      </item>
      <item>
         <title>Vũ Thị Minh Anh</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1820682802</link>
         <description><![CDATA[<div>a) 2Fe(OH)3 ----&gt;Fe2O3+3H2O</div>]]></description>
         <enclosure url="" />
         <pubDate>2021-10-16 03:02:15 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1820682802</guid>
      </item>
      <item>
         <title>Đăng</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1820682884</link>
         <description><![CDATA[<div>H2SO4+2<strong>NAOH</strong>--&gt;NA2SO4+2H20</div>]]></description>
         <enclosure url="" />
         <pubDate>2021-10-16 03:02:23 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1820682884</guid>
      </item>
      <item>
         <title>Phương Thảo</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1820682925</link>
         <description><![CDATA[<div>2NaOH+CO2-&gt;NA2CO3+H2O</div>]]></description>
         <enclosure url="" />
         <pubDate>2021-10-16 03:02:25 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1820682925</guid>
      </item>
      <item>
         <title>Thùy My</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1820682954</link>
         <description><![CDATA[<div>d. NaOH+HCl---&gt; NaCl+H2O</div>]]></description>
         <enclosure url="" />
         <pubDate>2021-10-16 03:02:27 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1820682954</guid>
      </item>
      <item>
         <title>c) H2SO4 + Zn(OH)2 --&gt; ZnSO4 + 2H2O</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1820682972</link>
         <description><![CDATA[]]></description>
         <enclosure url="" />
         <pubDate>2021-10-16 03:02:29 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1820682972</guid>
      </item>
      <item>
         <title>Duy</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1820682990</link>
         <description><![CDATA[<div>H2SO4+2NaOH--&gt;Na2SO4+2H2O</div>]]></description>
         <enclosure url="" />
         <pubDate>2021-10-16 03:02:30 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1820682990</guid>
      </item>
      <item>
         <title>vũ hải anh</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1820683027</link>
         <description><![CDATA[<div>a/ 2Fe(OH)3---&gt; Fe2O3+3H2O</div>]]></description>
         <enclosure url="" />
         <pubDate>2021-10-16 03:02:33 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1820683027</guid>
      </item>
      <item>
         <title>Vũ Trung hiếu</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1820683037</link>
         <description><![CDATA[<div>C,H2SO4 + Zn(OH)2 —-&gt; ZnSO4 +2H2O</div>]]></description>
         <enclosure url="" />
         <pubDate>2021-10-16 03:02:34 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1820683037</guid>
      </item>
      <item>
         <title>Phương</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1820683095</link>
         <description><![CDATA[<div>d,NaOH+HCl-&gt;NaCl+H2O</div>]]></description>
         <enclosure url="" />
         <pubDate>2021-10-16 03:02:38 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1820683095</guid>
      </item>
      <item>
         <title>Ngọc Anh</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1820683127</link>
         <description><![CDATA[<div>a. 2Fe(OH)3 -&gt; Fe2O3 + 2H2O</div>]]></description>
         <enclosure url="" />
         <pubDate>2021-10-16 03:02:41 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1820683127</guid>
      </item>
      <item>
         <title>Nguyễn Thanh Hiền</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1820683389</link>
         <description><![CDATA[<div>c) H2SO4+Zn(OH)2-&gt; ZnSO4+H2O</div>]]></description>
         <enclosure url="" />
         <pubDate>2021-10-16 03:03:01 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1820683389</guid>
      </item>
      <item>
         <title>Ngô Nhật My</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1820683497</link>
         <description><![CDATA[<div>d) NaOH + HCl -&gt; NaCl + H2O</div>]]></description>
         <enclosure url="" />
         <pubDate>2021-10-16 03:03:09 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1820683497</guid>
      </item>
      <item>
         <title>Chuyên</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1820683607</link>
         <description><![CDATA[<div>H2SO4+2NaOH —&gt; Na2SO4+2H2O</div>]]></description>
         <enclosure url="" />
         <pubDate>2021-10-16 03:03:16 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1820683607</guid>
      </item>
      <item>
         <title>Nga</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1820683720</link>
         <description><![CDATA[<div>d) NaOH + HCl -&gt; NaCl + H2O</div>]]></description>
         <enclosure url="" />
         <pubDate>2021-10-16 03:03:22 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1820683720</guid>
      </item>
      <item>
         <title>Toàn</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1820683733</link>
         <description><![CDATA[<div>2NaOH+CO2–&gt; na2co3 +h2o</div>]]></description>
         <enclosure url="" />
         <pubDate>2021-10-16 03:03:23 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1820683733</guid>
      </item>
      <item>
         <title>Nguyễn Hồng Anh</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1820683848</link>
         <description><![CDATA[<div>a)&nbsp;</div><div>2Fe(OH)3 =&gt; ⁡Fe2O3 + 3H2O</div>]]></description>
         <enclosure url="" />
         <pubDate>2021-10-16 03:03:30 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1820683848</guid>
      </item>
      <item>
         <title>Hoa </title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1820683870</link>
         <description><![CDATA[<div>H2SO4&nbsp;+ Zn(OH)2 =} ZnSO4 + 2H2O</div>]]></description>
         <enclosure url="" />
         <pubDate>2021-10-16 03:03:31 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1820683870</guid>
      </item>
      <item>
         <title>Duyên </title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1820683984</link>
         <description><![CDATA[<div>b)H2SO4 + 2NaOH ----&gt; Na2SO4  + 2H2O</div>]]></description>
         <enclosure url="" />
         <pubDate>2021-10-16 03:03:39 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1820683984</guid>
      </item>
      <item>
         <title>Khánh</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1820684091</link>
         <description><![CDATA[]]></description>
         <enclosure url="https://padlet-uploads.storage.googleapis.com/1365877380/d8a748f9ef4ee0df93fea0432e03598d/image.jpg" />
         <pubDate>2021-10-16 03:03:47 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1820684091</guid>
      </item>
      <item>
         <title>Thùy</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1820684129</link>
         <description><![CDATA[<div>e) 2NaOH + CO2 -&gt; Na2CO3 + H2O</div>]]></description>
         <enclosure url="" />
         <pubDate>2021-10-16 03:03:49 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1820684129</guid>
      </item>
      <item>
         <title>Dũng</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1820684323</link>
         <description><![CDATA[<div>H2SO4+ 2NaOH-&gt; Na2SO4+ 2H2O</div>]]></description>
         <enclosure url="" />
         <pubDate>2021-10-16 03:04:02 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1820684323</guid>
      </item>
      <item>
         <title>Nguyễn Khánh Linh </title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1820684806</link>
         <description><![CDATA[<div>H2SO4+2NaOH--&gt; Fe2O3+3H2O<br><br></div>]]></description>
         <enclosure url="" />
         <pubDate>2021-10-16 03:04:19 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1820684806</guid>
      </item>
      <item>
         <title></title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1820684851</link>
         <description><![CDATA[<div>H2SO4+Zn(OH)2—&gt;ZnSO4+H2O</div>]]></description>
         <enclosure url="" />
         <pubDate>2021-10-16 03:04:23 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1820684851</guid>
      </item>
      <item>
         <title>Phạm Quốc Đại</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1820684891</link>
         <description><![CDATA[<div><strong>b)</strong> H2SO4<sub> </sub>+ 2NaOH → Na2SO4 + 2H2O</div>]]></description>
         <enclosure url="" />
         <pubDate>2021-10-16 03:04:25 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1820684891</guid>
      </item>
      <item>
         <title>Duy</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1820688029</link>
         <description><![CDATA[<div>Ba(OH)2+H2SO4--&gt;BaSO4+2H2O</div>]]></description>
         <enclosure url="" />
         <pubDate>2021-10-16 03:08:13 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1820688029</guid>
      </item>
      <item>
         <title>Vũ Thị Minh Anh</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1820689256</link>
         <description><![CDATA[<div>- dùng quỳ tím<br>&nbsp;+làm quỳ tím chuyển xanh là NaOH, Ba (OH)2<br>+còn lại NaCl k có hiện tượng<br>- dùng H2SO4<br>+kết tủa trắng là Ba (OH)2<br>+ Còn lại là NaOH</div>]]></description>
         <enclosure url="" />
         <pubDate>2021-10-16 03:09:49 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1820689256</guid>
      </item>
      <item>
         <title>nguyễn hải anh</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1820689388</link>
         <description><![CDATA[]]></description>
         <enclosure url="https://padlet-uploads.storage.googleapis.com/1379823571/2336c28dd8d1f05ad297460539e36e00/IMG_20211016_100938.jpg" />
         <pubDate>2021-10-16 03:09:59 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1820689388</guid>
      </item>
      <item>
         <title>vũ hải anh</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1820690289</link>
         <description><![CDATA[<div>lấy mẫu thử và đánh số thứ tự<br>cho 3 mẩu quỳ tím vào 3 mẫu&nbsp;<br>-chất làm đổi màu quỳ tím thành màu xanh: NaOH, Ba(OH)2&nbsp; (1)<br>-k làm đổi màu quỳ tím : NaCl<br>cho H2SO4 vào nhóm 1<br>- Ba(OH)2 kết tủa trắng<br>-còn lại là NaOH</div>]]></description>
         <enclosure url="" />
         <pubDate>2021-10-16 03:10:54 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1820690289</guid>
      </item>
      <item>
         <title>Khánh</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1820690453</link>
         <description><![CDATA[]]></description>
         <enclosure url="https://padlet-uploads.storage.googleapis.com/1365877380/5d52f952d043abc20d07a1c799ee3dd2/C933ADC5_3FB1_4346_8166_CD995F265885.jpeg" />
         <pubDate>2021-10-16 03:11:05 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1820690453</guid>
      </item>
      <item>
         <title>Minh thảo </title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1820690540</link>
         <description><![CDATA[]]></description>
         <enclosure url="https://padlet-uploads.storage.googleapis.com/1365874579/d08f568e46d3f3ad6628913f64ee92a3/20211016_100937.jpg" />
         <pubDate>2021-10-16 03:11:11 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1820690540</guid>
      </item>
      <item>
         <title>Tài</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1820691054</link>
         <description><![CDATA[<div>cho ba chất kia vào từng&nbsp;&nbsp;lọ<br>dùng quỳ tím vào từng mẫu thử<br>khi quỳ tìm có màu xanh thì là NAOH,Ba(OH)2<br>Cho dung dịch H2SO4 vào từng mẫu<br>Mẫu nào có kết tủa trắng là BA(OH)2<br>còn lại là NAOH<br><br></div>]]></description>
         <enclosure url="" />
         <pubDate>2021-10-16 03:11:46 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1820691054</guid>
      </item>
      <item>
         <title>Dũng</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1820691098</link>
         <description><![CDATA[<div>Lấy mẫu thử từng chất và đánh số thứ tự. Hòa vào H2O rồi thử dd<br>- Dùng quỳ tím&nbsp;<br>+ quỳ tím hóa xanh là NaOH và Ba(OH)2<br>+ còn lại là NaCl không có hiện tượng<br>- Cho H2SO4 vào các mẫu thử NaOH và Ba(OH)<br>+ mẫu kết tủa trắng là sp Ba(OH)2<br>+ pthh: Ba(OH)2 + H2SO4 → BaSO4 trắng + 2H2O<br>+ còn lại là NaOH</div>]]></description>
         <enclosure url="" />
         <pubDate>2021-10-16 03:11:49 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1820691098</guid>
      </item>
      <item>
         <title>Chuyên</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1820691155</link>
         <description><![CDATA[]]></description>
         <enclosure url="https://padlet-uploads.storage.googleapis.com/1365893318/039594d0e7c8fe54a748ae83cb69ab47/image.jpg" />
         <pubDate>2021-10-16 03:11:53 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1820691155</guid>
      </item>
      <item>
         <title>MỐI QUAN HỆ GIỮA CÁC HCVC</title>
         <author>drlonguyen</author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1855546668</link>
         <description><![CDATA[<div>Nhiệm vụ của tất cả các nhóm: viết sơ độ mối quan hệ giữa các HCVC đã học, Viết PTHH minh họa.</div>]]></description>
         <enclosure url="" />
         <pubDate>2021-10-30 14:10:11 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1855546668</guid>
      </item>
      <item>
         <title>NHÓM 1</title>
         <author>drlonguyen</author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1857481214</link>
         <description><![CDATA[<div>| Lê Vũ Duy Anh<br>&nbsp;| Nguyễn Cao Kiều Anh<br>&nbsp;| Nguyễn Hồng Anh<br><strong>&nbsp;| Nguyễn Thị Hải Anh( NHÓM TRƯỞNG)</strong><br> | Nguyễn Thị Ngọc Anh<br> | Vũ Thi Minh Anh&nbsp;<br>| Vũ Thị Hải Anh<br> | Nguyễn Việt Bách<br> | Đặng Đình Quốc Bảo</div>]]></description>
         <enclosure url="" />
         <pubDate>2021-11-01 01:22:07 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1857481214</guid>
      </item>
      <item>
         <title>NHÓM 2</title>
         <author>drlonguyen</author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1857482081</link>
         <description><![CDATA[<div>&nbsp;| Đỗ Mai Chi<br>&nbsp;| Phạm Thị Hồng Chuyên <br>| Phạm Hoàng Thùy Dung<br>&nbsp;| Nguyễn Đức Chí Dũng <br>| Vũ Quốc Lê Duy<br>&nbsp;| Nguyễn Thị Mỹ Duyên<br>&nbsp;| Phạm Quốc Đại<br><strong>&nbsp;| Nguyễn Trúc Anh Đào (NHÓM TRƯỞNG)</strong><br> Nguyễn Hải Đăng</div>]]></description>
         <enclosure url="" />
         <pubDate>2021-11-01 01:22:36 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1857482081</guid>
      </item>
      <item>
         <title>NHÓM 3</title>
         <author>drlonguyen</author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1857482724</link>
         <description><![CDATA[<div>&nbsp;| Nguyễn Thị Kim Hằng <br><strong>| Phạm Minh Hằng (NHÓM TRƯỞNG)</strong><br>| Nguyễn Thanh Hiền&nbsp;<br>| Vũ Trung Hiếu&nbsp;<br>| Nguyễn Phương Hoa&nbsp;<br>| Lê Quốc Khánh&nbsp;<br>| Lê Mai Linh&nbsp;<br>| Nguyễn Khánh Linh&nbsp;<br>| Đặng Thị Xuân Mai</div>]]></description>
         <enclosure url="" />
         <pubDate>2021-11-01 01:22:57 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1857482724</guid>
      </item>
      <item>
         <title>NHÓM 4</title>
         <author>drlonguyen</author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1857483314</link>
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         <pubDate>2021-11-04 01:34:10 UTC</pubDate>
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         <pubDate>2021-11-04 05:43:04 UTC</pubDate>
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         <pubDate>2021-11-04 07:07:49 UTC</pubDate>
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         <pubDate>2021-11-04 08:55:56 UTC</pubDate>
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         <pubDate>2021-11-04 08:56:35 UTC</pubDate>
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         <title>Bảo</title>
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         <pubDate>2021-11-04 12:11:14 UTC</pubDate>
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         <pubDate>2021-11-04 12:25:38 UTC</pubDate>
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         <pubDate>2021-11-06 02:21:42 UTC</pubDate>
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         <pubDate>2021-11-09 12:32:42 UTC</pubDate>
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         <pubDate>2021-11-10 01:22:12 UTC</pubDate>
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         <pubDate>2021-11-10 15:47:15 UTC</pubDate>
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         <title></title>
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         <pubDate>2021-11-11 01:54:30 UTC</pubDate>
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         <title>sản phẩm nhóm 3</title>
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         <pubDate>2021-11-11 01:54:46 UTC</pubDate>
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         <pubDate>2021-11-15 08:41:36 UTC</pubDate>
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         <title></title>
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         <pubDate>2021-11-15 09:47:45 UTC</pubDate>
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         <title></title>
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         <pubDate>2021-11-16 03:23:26 UTC</pubDate>
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         <pubDate>2021-11-16 13:24:52 UTC</pubDate>
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         <pubDate>2021-11-17 15:33:47 UTC</pubDate>
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         <pubDate>2021-11-17 15:34:59 UTC</pubDate>
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         <pubDate>2021-11-23 00:45:36 UTC</pubDate>
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         <title></title>
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         <pubDate>2021-11-24 10:06:02 UTC</pubDate>
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         <pubDate>2021-11-25 01:58:05 UTC</pubDate>
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         <pubDate>2021-12-22 17:53:26 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1960928777</guid>
      </item>
      <item>
         <title>NHIỆM VỤ BÀI&quot;CÁC OXIT CỦA CACON&quot;</title>
         <author>drlonguyen</author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1977700485</link>
         <description><![CDATA[<div>1. CO là loại oxit gì? dự đoán tính chất hóa học ủa CO.<br>2. CO2 là oxit gì? dự đoán tính chất hóa học của CO2</div>]]></description>
         <enclosure url="" />
         <pubDate>2022-01-06 01:39:28 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1977700485</guid>
      </item>
      <item>
         <title>Sản phẩm của nhóm 4</title>
         <author>thuymy27</author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1980579074</link>
         <description><![CDATA[]]></description>
         <enclosure url="https://padlet-uploads.storage.googleapis.com/1430406394/bfc9df0c298bb9301812f2d7707c5221/Screenshot__261_.png" />
         <pubDate>2022-01-07 14:20:16 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1980579074</guid>
      </item>
      <item>
         <title></title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1980657426</link>
         <description><![CDATA[]]></description>
         <enclosure url="https://padlet-uploads.storage.googleapis.com/1304353394/b814d43c96b50ffca3eb867297053f8c/1.png" />
         <pubDate>2022-01-07 15:03:19 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1980657426</guid>
      </item>
      <item>
         <title>Sản phẩm của nhóm 3 </title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1980668116</link>
         <description><![CDATA[]]></description>
         <enclosure url="https://padlet-uploads.storage.googleapis.com/1305733020/521d86b532ebc7a3f29f4559a6d23468/image.png" />
         <pubDate>2022-01-07 15:09:11 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1980668116</guid>
      </item>
      <item>
         <title>V.H. Anh trình bày</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1980755363</link>
         <description><![CDATA[]]></description>
         <enclosure url="https://padlet-uploads.storage.googleapis.com/1497998343/99f1b32a220938c11e810e0f0ff6dc2c/IMG_20220107_225406.jpg" />
         <pubDate>2022-01-07 15:56:53 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1980755363</guid>
      </item>
      <item>
         <title>sản phẩm nhóm 2</title>
         <author>vuphuongthuy2403</author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1981326949</link>
         <description><![CDATA[]]></description>
         <enclosure url="https://padlet-uploads.storage.googleapis.com/1429665234/5d3efdaf85fe7037feaade0ab0d278b0/image.png" />
         <pubDate>2022-01-08 01:13:42 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1981326949</guid>
      </item>
      <item>
         <title>NHIỆM VỤ BÀI SƠ LƯỢC BẢNG TUẦN HOÀN CÁC NGUYÊN TỐ HÓA HỌC.</title>
         <author>drlonguyen</author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/1995958305</link>
         <description><![CDATA[<div><strong>- Nhóm 1: </strong><br>+ Bảng tuần hoàn các nguyên tố hóa học là gì?<br>+ Nêu nguyên tắc sắp xếp các nguyên tố trong bảng tuần hoàn<br><strong>- Nhóm 2:</strong>&nbsp; Nêu các hiểu biết về ô nguyên tố. cho ví dụ<br><strong>- Nhóm 3:</strong>&nbsp; Nêu các hiểu biết về chu kì. cho ví dụ<br><strong>- Nhóm 4,5:</strong>&nbsp; Nêu các hiểu biết về nhóm. cho ví dụ<br><br></div>]]></description>
         <enclosure url="" />
         <pubDate>2022-01-17 14:12:47 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/1995958305</guid>
      </item>
      <item>
         <title>minh anh trình bày!</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/2002864553</link>
         <description><![CDATA[]]></description>
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         <pubDate>2022-01-20 13:47:07 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/2002864553</guid>
      </item>
      <item>
         <title>Sản Phẩm Của Nhóm 3</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/2005124112</link>
         <description><![CDATA[]]></description>
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         <pubDate>2022-01-21 14:33:54 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/2005124112</guid>
      </item>
      <item>
         <title>Sản phẩm của nhóm 3</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/2006178815</link>
         <description><![CDATA[<div>- Chu kỳ là dãy các nguyên tố mà nguyên tử của chúng có cùng số lớp electron và được xếp theo chiều điện tích hạt nhân tăng dần.<br>- Số thứ tự chu kì bằng số lớp electron.&nbsp;<br>- Bảng tuần hoàn gồm có 7 chu kỳ: chu kỳ 1, 2, 3 là các chu kỳ nhỏ. Chu kỳ 4, 5, 6, 7 là các chu kỳ lớn.<br>+ Chu kỳ 1: Gồm 2 nguyên tố là H và He, có 1 lớp electron tong nguyên tử. Điện tích hạt nhân tăng từ H là 1+ đến He là 2+.<br>+ Chu kỳ 2: Gồm 8 nguyên tố từ Li đến Ne, có 2 lớp electron trong nguyên tử. Điện tích hạt nhân tăng từ Li là 3+, … đến Ne là 10+.<br>+ Chu kỳ 3: Gồm 8 nguyên tố từ Na đến Ar, có 3 lớp electron trong nguyên tử. Điện tích hạt nhân tăng dần từ Na là 11+, … đến Ar là 18+.<br>+ Chu kỳ 4 và chu kỳ 5: Mỗi chu kỳ đều có 18 nguyên tố, bắt đầu là một kim loại kiềm K là 19+ và Rb là 37+, kết thúc là một khí hiếm Kr là 36+ và Xe là 54+.<br>+ Chu kỳ 6: Có 32 nguyên tố, bắt đầu từ kim loại kiềm Cs là 55+ và kết thúc là khí hiếm Rn là 86+.<br>+ Chu kỳ 7: Gồm 32 nguyên tố, bắt đầu từ kim loại kiềm Fr là 87+ và kết thúc là khí hiếm Uuo là 118+.<br>Trong mỗi chu kỳ từ trái sang phải: số nguyên tử tăng, bán kính nguyên tử giảm, độ âm điện tăng. Ngoại trừ chu kỳ 1 chỉ gồm 2 nguyên tố, các chu kỳ còn lại chứa nguyên tố của các nhóm chính, từ chu kỳ 4 trở đi còn có nguyên tố trong 10 nhóm phụ. Chu kỳ 6 còn có 14 nguyên tố trong nhóm Lanthan, chu kỳ 7 nhóm Actini.<br>Nhận xét: mỗi chu kỳ bắt đầu là một kim loại kiềm và kết thúc bằng một khi hiếm (trừ chu kì 1 vì bắt đầu là phi kim H, kết thúc bởi khí hiếm He).</div>]]></description>
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         <pubDate>2022-01-22 08:16:13 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/2006178815</guid>
      </item>
      <item>
         <title></title>
         <author>drlonguyen</author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/2008707806</link>
         <description><![CDATA[<div><strong>- NHIỆM VỤ NHÓM 1</strong><br>Trình bày tính chất hóa học của phi kim bằng SƠ ĐỒ TƯ DUY.<br><strong>- NHIỆM VỤ NHÓM 2:<br>&nbsp;</strong>Trình bày tính chất hóa học của Cl2 bằng sơ đồ tư duy<br><strong>- NHIỆM VỤ NHÓM 3:<br></strong>Hoàn thành sơ đồ 3/103 - SGK.<strong><br>- NHiệm vụ nhóm 4.<br></strong>Nêu cấu tạo bẳng tuần hoàn bằng sơ đồ tư duy.<strong><br>- Nhiệm vụ nhóm 5. <br></strong>Phân loại các dạng bài tập trang 103/SGK</div>]]></description>
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         <pubDate>2022-01-24 13:09:46 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/2008707806</guid>
      </item>
      <item>
         <title>Sản Phẩm Của Nhóm 4</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/2013579615</link>
         <description><![CDATA[]]></description>
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         <pubDate>2022-01-26 14:04:37 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/2013579615</guid>
      </item>
      <item>
         <title>NHÓM 5: Mạnh Tùng, Thùy, Phương Thảo, Thư, Việt Trang, Quỳnh Trang, Nguyên Trang</title>
         <author>vuphuongthuy2403</author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/2013675823</link>
         <description><![CDATA[]]></description>
         <enclosure url="https://padlet-uploads.storage.googleapis.com/1429665234/b919547c39badd474d1765c5c6799451/image.png" />
         <pubDate>2022-01-26 14:42:26 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/2013675823</guid>
      </item>
      <item>
         <title></title>
         <author>vuphuongthuy2403</author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/2013678142</link>
         <description><![CDATA[]]></description>
         <enclosure url="https://padlet-uploads.storage.googleapis.com/1429665234/ed92498fbf70d1f3689cbbab95dfc966/image.png" />
         <pubDate>2022-01-26 14:43:19 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/2013678142</guid>
      </item>
      <item>
         <title>bảo trình bày!</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/2013728004</link>
         <description><![CDATA[]]></description>
         <enclosure url="https://padlet-uploads.storage.googleapis.com/1497998343/8324fcdd2882cdf02f68dadbc54f7eb6/20220126_2154381.mp4" />
         <pubDate>2022-01-26 15:02:30 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/2013728004</guid>
      </item>
      <item>
         <title></title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/2014016681</link>
         <description><![CDATA[]]></description>
         <enclosure url="https://padlet-uploads.storage.googleapis.com/1554658733/53abce464ca491ed4fd5042a0f08865f/C72D6373_6461_4C43_8464_419AB59D2812.jpeg" />
         <pubDate>2022-01-26 16:54:14 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/2014016681</guid>
      </item>
      <item>
         <title>Sản Phẩm Của Nhóm 3</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/2014686043</link>
         <description><![CDATA[]]></description>
         <enclosure url="https://padlet-uploads.storage.googleapis.com/1449647808/423b247ab0a34a1367833774eaf6aff3/Kh_ng_C__Ti_u___119_20220126234815.png" />
         <pubDate>2022-01-26 23:14:24 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/2014686043</guid>
      </item>
      <item>
         <title>NHIỆM VỤ BÀI TH PHI KIM</title>
         <author>drlonguyen</author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/2031169729</link>
         <description><![CDATA[<div><strong>VIDEO BÀI THỰC HÀNH:</strong></div><div><strong>TÍNH CHẤT CỦA PHI KIM VÀ HỢP CHẤT.</strong></div><div>1. Cacbon khử đồng (II) oxit: <a href="https://www.youtube.com/watch?v=_nW3AOSakV8">https://www.youtube.com/watch?v=_nW3AOSakV8</a></div><div>2. Nhiệt phân NaHCO3: <a href="https://www.youtube.com/watch?v=XMxi3vDWeOc">https://www.youtube.com/watch?v=XMxi3vDWeOc</a></div><div>&nbsp;</div><div>3. Nhận biết muối cacbonat và muối clorua: <a href="https://www.youtube.com/watch?v=b6ufvj98JYw">https://www.youtube.com/watch?v=b6ufvj98JYw</a></div>]]></description>
         <enclosure url="" />
         <pubDate>2022-02-06 06:26:16 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/2031169729</guid>
      </item>
      <item>
         <title>BẢN TƯỜNG TRÌNH</title>
         <author>drlonguyen</author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/2031169937</link>
         <description><![CDATA[]]></description>
         <enclosure url="https://padlet-uploads.storage.googleapis.com/1320696264/511f7fa8fb6dab0b6fe4354744bad351/image.png" />
         <pubDate>2022-02-06 06:26:47 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/2031169937</guid>
      </item>
      <item>
         <title>sản phẩm nhóm 3</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/2037388294</link>
         <description><![CDATA[]]></description>
         <enclosure url="https://padlet-uploads.storage.googleapis.com/1574305920/dfb1a8e18af77673027085ee55300f97/T_i_li_u_kh_ng_c__ti_u_____1_.pdf" />
         <pubDate>2022-02-09 08:30:08 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/2037388294</guid>
      </item>
      <item>
         <title>Sản phẩm nhóm 4 (2)</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/2038151239</link>
         <description><![CDATA[]]></description>
         <enclosure url="https://padlet-uploads.storage.googleapis.com/1553566928/428f890e53e6f7cc8ac1515c56f5d9ba/Screenshot__343_.png" />
         <pubDate>2022-02-09 15:22:43 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/2038151239</guid>
      </item>
      <item>
         <title>Sản phẩm nhóm 4 (1)</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/2038153027</link>
         <description><![CDATA[]]></description>
         <enclosure url="https://padlet-uploads.storage.googleapis.com/1553566928/ed633e0a8c77a78e84e3970b357c8c18/Screenshot__345_.png" />
         <pubDate>2022-02-09 15:23:25 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/2038153027</guid>
      </item>
      <item>
         <title></title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/2038374064</link>
         <description><![CDATA[<div>Lớp 9A<br>Nhóm 2<br>Thành viên : Chuyên, Duyên, Dung, Duy, Đào, Đăng</div>]]></description>
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         <pubDate>2022-02-09 16:51:03 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/2038374064</guid>
      </item>
      <item>
         <title></title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/2038388923</link>
         <description><![CDATA[]]></description>
         <enclosure url="https://padlet-uploads.storage.googleapis.com/1304353394/0023a8643617917d95bd99ef70ea118f/8.png" />
         <pubDate>2022-02-09 16:57:01 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/2038388923</guid>
      </item>
      <item>
         <title>NHIỆM VỤ BÀI KHÁI NIỆM HỢP CHẤT HỮU CƠ</title>
         <author>drlonguyen</author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/2039200132</link>
         <description><![CDATA[<div><strong>- Nhóm 1: </strong>Em biết hợp chất hữu cơ có ở đâu? ( sơ đồ)<br><strong>- Nhóm 2: </strong>Nêu ví dụ về 1 số hợp chất hữu cơ và phân loại chúng ( làm bằng sơ đồ tư duy)<br>- Nhóm 3,4,5: Xem video và hoàn thành phiếu học tập:<br>a. Video: <a href="https://www.youtube.com/watch?v=-wqTQ0s55OM">https://www.youtube.com/watch?v=-wqTQ0s55OM</a><br>b. Phiếu học tập:<br><br><br></div>]]></description>
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         <pubDate>2022-02-10 01:16:52 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/2039200132</guid>
      </item>
      <item>
         <title>Nhóm 1 chưa có sản phẩm bài TH phi kim</title>
         <author>drlonguyen</author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/2039223729</link>
         <description><![CDATA[]]></description>
         <enclosure url="" />
         <pubDate>2022-02-10 01:33:24 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/2039223729</guid>
      </item>
      <item>
         <title>NHÓM 3 nộp sản phẩm </title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/2042666433</link>
         <description><![CDATA[]]></description>
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         <pubDate>2022-02-11 15:51:59 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/2042666433</guid>
      </item>
      <item>
         <title>Nhóm 2 nộp bài</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/2051128172</link>
         <description><![CDATA[]]></description>
         <enclosure url="https://padlet-uploads.storage.googleapis.com/1304354443/ad32cd09d3108dfa0f930445afb38a53/20220216_220641.png" />
         <pubDate>2022-02-16 15:29:50 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/2051128172</guid>
      </item>
      <item>
         <title>nhóm1</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/2051254281</link>
         <description><![CDATA[]]></description>
         <enclosure url="https://padlet-uploads.storage.googleapis.com/1497998343/110c6b1f4921511f4be48b99d56bea23/Screenshot_2022_02_16_23_17_25_71_c37d74246d9c81aa0bb824b57eaf7062.jpg" />
         <pubDate>2022-02-16 16:18:51 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/2051254281</guid>
      </item>
      <item>
         <title>Bách trình bày!</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/2051272900</link>
         <description><![CDATA[]]></description>
         <enclosure url="https://padlet-uploads.storage.googleapis.com/1497998343/06b637311bfa3660af381caf3e94d645/received_901969127151909.jpeg" />
         <pubDate>2022-02-16 16:26:28 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/2051272900</guid>
      </item>
      <item>
         <title>NHIỆM VỤ BÀI METAN</title>
         <author>drlonguyen</author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/2054956400</link>
         <description><![CDATA[<div>1. Nhóm 1: Trình bày trạng thái tự nhiên? Tính chất vật lí của khí metan.</div><div>2. Nhóm 2: Xem video thí nghiệm:</div><div>- Metan + O2: <a href="https://www.youtube.com/watch?v=Nz7_9SM86p8">https://www.youtube.com/watch?v=Nz7_9SM86p8</a></div><div>- Metan + Cl2: <a href="https://www.youtube.com/watch?v=WVv_AN29HbU">https://www.youtube.com/watch?v=WVv_AN29HbU</a></div><div>Hoàn thành phiếu học tập: PHIẾU PHÍA TRÊN<br>3. Nhóm 3: Viết CTCT của metan và nêu đặc điểm cấu tạo của metan.</div><div>4. Nhóm 4,5: trình bày ứng dụng của metan ( sơ đồ tư duy)</div>]]></description>
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         <pubDate>2022-02-18 09:46:46 UTC</pubDate>
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      </item>
      <item>
         <title>NHÓM 1: Hồng Anh trình bày</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/2055026077</link>
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         <pubDate>2022-02-18 10:41:13 UTC</pubDate>
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      </item>
      <item>
         <title>Sơ đồ tư duy - Nhóm 5</title>
         <author>vuphuongthuy2403</author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/2055519802</link>
         <description><![CDATA[]]></description>
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         <pubDate>2022-02-18 16:09:45 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/2055519802</guid>
      </item>
      <item>
         <title></title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/2056030392</link>
         <description><![CDATA[]]></description>
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         <pubDate>2022-02-18 22:43:46 UTC</pubDate>
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      </item>
      <item>
         <title>NHIỆM VỤ BÀI &quot;ETILEN:</title>
         <author>drlonguyen</author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/2057219963</link>
         <description><![CDATA[<div><strong>NHIỆM VỤ CHUNG:</strong> Tất cả các nhóm xem video để hoàn thành phiếu học tập sau:</div><div>- Etilen làm mất màu dung dịch brom: <a href="https://www.youtube.com/watch?v=M8C5RUK2MhE">https://www.youtube.com/watch?v=M8C5RUK2MhE</a></div><div><mark>-</mark><strong><mark> Ngoài ra ETILEN còn có tính chất hóa học nào khác?</mark></strong></div><div>&nbsp;</div><div><strong>- Nhóm 1:</strong> Trình bày CTPT, PTK, tính chất vật lí của Etilen.</div><div>- Nhóm 2: Trình bày CTCT và đặc điểm cấu tạo của ETILEN, cấu tạo của etilen có điểm gì khác với metan.</div><div><strong>- Nhóm 3:</strong> Trình bày ứng dụng của etilen.</div><div><strong>- Nhóm 4,5:</strong> Tại sao khi vận chuyển hoa quả đi xa người ta không xếp quả xanh lẫn với quả chín?</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; ? Thành phần của túi nilon ( giấy bóng, áo mưa…) là gì.</div>]]></description>
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         <pubDate>2022-02-20 11:31:30 UTC</pubDate>
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      <item>
         <title>Nhóm 3 nộp bài ạ </title>
         <author>nguyenklinh120</author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/2062881883</link>
         <description><![CDATA[]]></description>
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         <pubDate>2022-02-23 16:02:57 UTC</pubDate>
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         <title></title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/2062892171</link>
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         <pubDate>2022-02-23 16:08:03 UTC</pubDate>
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      <item>
         <title>Nguyễn Hải Anh thuyết trình</title>
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         <link>https://padlet.com/drlonguyen/HOA9A/wish/2062893167</link>
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         <pubDate>2022-02-23 16:08:34 UTC</pubDate>
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      <item>
         <title>Sản phẩm của nhóm 4- Trúc Quỳnh trình bày</title>
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         <pubDate>2022-02-23 16:17:44 UTC</pubDate>
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         <title></title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/2062974904</link>
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         <pubDate>2022-02-23 16:49:58 UTC</pubDate>
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      <item>
         <title>ETILEN - N5</title>
         <author>vuphuongthuy2403</author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/2063007352</link>
         <description><![CDATA[]]></description>
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         <pubDate>2022-02-23 17:06:55 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/2063007352</guid>
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      <item>
         <title></title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/2063673722</link>
         <description><![CDATA[<div>Nhóm 2: Chi, Dũng, Đại</div>]]></description>
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         <pubDate>2022-02-24 01:32:52 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/2063673722</guid>
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      <item>
         <title></title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/2063676070</link>
         <description><![CDATA[<div>Hàn Tùng, Việt<br><br></div>]]></description>
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         <pubDate>2022-02-24 01:34:50 UTC</pubDate>
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      </item>
      <item>
         <title>DẦU MỎ - KHÍ THIÊN NHIÊN</title>
         <author>drlonguyen</author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/2068038958</link>
         <description><![CDATA[<div><strong>NHIỆM VỤ BÀI DẦU MỎ VÀ KHÍ THIÊN NHIÊN.</strong></div><div>&nbsp;</div><div><strong>- Nhóm 1:</strong> Nêu trính chất vật lí của dầu mỏ (dầu thô)- có hình ảnh minh họa.</div><div><strong>- Nhóm 2:&nbsp;</strong></div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; ? Dầu mỏ được hình thành như thế nào? Dầu mỏ có ở đâu?</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; ? Thành phần của dầu mỏ</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; ? Cấu tạo 1 túi dầu ( mỏ dầu)</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; ? Cách khai thác dầu mỏ.</div><div><strong>- Nhóm 3:&nbsp;</strong></div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; ? Phương pháp chế biến dầu mỏ.</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; ? Các sản phẩm chế biến từ dầu mỏ ( sơ đồ) và ứng dụng của từng loại.</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; ? Làm thế nào để tăng lượng xăng thu được.</div><div><strong>- Nhóm 4, 5:</strong></div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; ? Khí thiên nhiên có ở đâu, thàn phần là gì.</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; ? Cách khai thác khí thiên nhiên</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; ? ứng dụng của khí thiên nhiên.</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; ? dầu mỏ của Việt Nam có ở vùng nào, dầu mỏ Việt Nam có đặc điểm gì? Trữ lượng bao nhiêu? Nêu 1 số mỏ khí và dầu ở Việt Nam.</div>]]></description>
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         <pubDate>2022-02-27 09:19:55 UTC</pubDate>
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      </item>
      <item>
         <title>Nhóm 3 nộp bài ạ </title>
         <author>nguyenklinh120</author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/2073251430</link>
         <description><![CDATA[]]></description>
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         <pubDate>2022-03-02 09:52:16 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/2073251430</guid>
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      <item>
         <title>Nguyễn Cao Kiều Anh thuyết trình</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/2073264605</link>
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         <pubDate>2022-03-02 10:01:03 UTC</pubDate>
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      </item>
      <item>
         <title>Sản phẩm của nhóm 4</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/2073874926</link>
         <description><![CDATA[]]></description>
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         <pubDate>2022-03-02 16:03:21 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/2073874926</guid>
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      <item>
         <title>DẦU MỎ - KHÍ THIÊN NHIÊN N5</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/2075360117</link>
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         <pubDate>2022-03-03 08:27:18 UTC</pubDate>
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      <item>
         <title></title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/2075366709</link>
         <description><![CDATA[<div>-Dầu mỏ được hình thành từ xác của động và thực vật nhỏ (plankton) đã chết dưới các đáy biển cổ đại cách đây 10 đến 600 triệu năm&nbsp;<br>-Trong tự nhiên, dầu mỏ tập trung thành những vùng lớn, ở sâu trong lòng đất, tạo thành các mỏ dầu&nbsp;<br>- Thành phần chính của dầu mỏ là metan , etan , butan , và propan, còn có rất nhiều các chất khác nhưng tỷ lệ 4 chất này là nhiều nhất<br>-Túi dầu mỏ được cấu tạo 3 phần:dưới cùng là lớp nước mặn,ở giữa là dầu mỏ,trên cùng là khí mỏ dầu<br>-Muốn khai thác dầu, người ta khoan những lỗ khoan gọi là giếng dầu. Khi khoan trúng lớp dầu lỏng, thông thường dầu sẽ tự phun lên do áp suất cao của vỉa. Khi lượng dầu giảm thì áp suất cũng giảm đi, người ta phải dùng bơm hút dầu lên hoặc bơm nước hay khí xuống để duy trì áp suất cần thiết</div>]]></description>
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         <pubDate>2022-03-03 08:31:53 UTC</pubDate>
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      <item>
         <title></title>
         <author>drlonguyen</author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/2077793125</link>
         <description><![CDATA[<div><strong>NHIỆM VỤ BÀI NHIÊN LIỆU</strong></div><div>&nbsp;</div><div><strong>- Nhóm 1:</strong></div><div>? Nhiên liệu là gì? Điện có phải 1 loại nhiên liệu không?</div><div>? Nêu ví dụ về 1 số nhiên liệu.</div><div><strong>- Nhóm 2,3:&nbsp;</strong></div><div>? Phân loại nhiên liệu dựa vào trạng thái.</div><div>? Các loại nhiên liệu cụ thể từng loại và đặc điểm của chúng.</div><div>? Nhiên liệu nào cháy dễ nhất, tỏa nhiều nhiệt nhất.</div><div><strong>- Nhóm 4,5:</strong></div><div>? Nhiên liệu hóa thạch là gì, ví dụ? nhiên liệu hóa thạch có hại gì?</div><div>? Làm thế nào để sử dụng nhiên liệu tiết kiệm, hiệu quả?</div><div>? Nêu các nguồn nhiên liệu có thể thay thế nhiên liệu hóa thạch.</div>]]></description>
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         <pubDate>2022-03-04 12:09:31 UTC</pubDate>
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      <item>
         <title>Ngọc Anh trình bày</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/2077977213</link>
         <description><![CDATA[]]></description>
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         <pubDate>2022-03-04 14:13:28 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/2077977213</guid>
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      <item>
         <title>Nhóm 3 nộp bài nhiên liệu ạ </title>
         <author>nguyenklinh120</author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/2078143988</link>
         <description><![CDATA[]]></description>
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         <pubDate>2022-03-04 15:39:32 UTC</pubDate>
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      <item>
         <title>Sản phẩm của nhóm 4- Tài trình bày</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/2078212514</link>
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         <pubDate>2022-03-04 16:17:08 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/2078212514</guid>
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      <item>
         <title>NHÓ 2, 5 CHƯA CÓ SẢN PHẨM:&quot;NHIÊN LIỆU&quot;</title>
         <author>drlonguyen</author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/2078784760</link>
         <description><![CDATA[]]></description>
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         <pubDate>2022-03-05 01:07:10 UTC</pubDate>
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      <item>
         <title>NHIÊN LIỆU - N5</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/2078786329</link>
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         <pubDate>2022-03-05 01:10:18 UTC</pubDate>
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      <item>
         <title>NHIỆM VỤ BÀI&quot; LUYỆN TẬP CHƯƠNG 4&quot;</title>
         <author>drlonguyen</author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/2079234634</link>
         <description><![CDATA[<div><strong>* Nhóm 1:</strong> Phân loại các bài tập hóa học đã học trong chương 4: lấy 1 số ví dụ cụ thể.</div><div><strong>* Nhóm 2:</strong> Trình bày BT 1,2/133-SGK</div><div><strong>* Nhóm 3:</strong> Trình bày BT 3/133-SGK</div><div><strong>* Nhóm 4,5:</strong> Trình bày BT 4/133-SGK</div>]]></description>
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         <pubDate>2022-03-05 15:24:04 UTC</pubDate>
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         <title></title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/2085664466</link>
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         <pubDate>2022-03-09 09:00:34 UTC</pubDate>
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      <item>
         <title>Đặng Quốc Bảo trình bày</title>
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         <pubDate>2022-03-09 09:01:13 UTC</pubDate>
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         <title></title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/2086307167</link>
         <description><![CDATA[]]></description>
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         <pubDate>2022-03-09 15:23:51 UTC</pubDate>
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      </item>
      <item>
         <title></title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/2086311563</link>
         <description><![CDATA[]]></description>
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         <pubDate>2022-03-09 15:25:47 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/2086311563</guid>
      </item>
      <item>
         <title>Nhóm 4: Mạnh, Nga, Thủy, Tài, Quỳnh</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/2086325663</link>
         <description><![CDATA[]]></description>
         <enclosure url="" />
         <pubDate>2022-03-09 15:32:19 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/2086325663</guid>
      </item>
      <item>
         <title>Sản phẩm của nhóm 4</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/2086370894</link>
         <description><![CDATA[]]></description>
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         <pubDate>2022-03-09 15:54:05 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/2086370894</guid>
      </item>
      <item>
         <title></title>
         <author>vuphuongthuy2403</author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/2086407509</link>
         <description><![CDATA[]]></description>
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         <pubDate>2022-03-09 16:12:13 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/2086407509</guid>
      </item>
      <item>
         <title></title>
         <author>vuphuongthuy2403</author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/2086410266</link>
         <description><![CDATA[]]></description>
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         <pubDate>2022-03-09 16:13:17 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/2086410266</guid>
      </item>
      <item>
         <title>NHÓM 3 nộp bài ạ </title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/2086419476</link>
         <description><![CDATA[]]></description>
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         <pubDate>2022-03-09 16:17:38 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/2086419476</guid>
      </item>
      <item>
         <title>NHIỆM VỤ BÀI THỰC HÀNH&quot; TÍNH CHẤT CỦA HIDROCACBON&quot;</title>
         <author>drlonguyen</author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/2088809342</link>
         <description><![CDATA[<div><br><strong>NHIỆM VỤ BÀI THỰC HÀNH</strong></div><div>&nbsp;</div><div>Video:</div><div>1. Điều chế và thu khí axetilen: <a href="https://www.youtube.com/watch?v=f8HutwqoJTE">https://www.youtube.com/watch?v=f8HutwqoJTE</a></div><div>2. Đốt axetilen trong không khí: <a href="https://www.youtube.com/watch?v=utKycu3nWG4">https://www.youtube.com/watch?v=utKycu3nWG4</a></div><div>3.Axetilen tác dụng với dd brom: <a href="https://www.youtube.com/watch?v=k2Wh2XnwTMw">https://www.youtube.com/watch?v=k2Wh2XnwTMw</a></div>]]></description>
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         <pubDate>2022-03-10 17:24:02 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/2088809342</guid>
      </item>
      <item>
         <title>NHIỆM VỤ BÀI&quot; RƯỢU ETYLIC&quot;</title>
         <author>drlonguyen</author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/2092208213</link>
         <description><![CDATA[<div><strong>Nhiệm vụ chung:</strong></div><div>- Video rượu etylic cháy trong không khí( tác dụng với oxi): <a href="https://www.youtube.com/watch?v=MzE3dAHs1gk">https://www.youtube.com/watch?v=MzE3dAHs1gk</a></div><div>- Video rượu etylic tác dụng với Na: <a href="https://www.youtube.com/watch?v=GekMV7ApOvY">https://www.youtube.com/watch?v=GekMV7ApOvY</a><br><br><strong>1. Nhóm 1.</strong> Quan sát video và nêu cá tính chất vật lí của rượu etylic, <a href="https://www.youtube.com/watch?v=FJcKJElAG9A">https://www.youtube.com/watch?v=FJcKJElAG9A</a></div><div>? Độ rượu là gì, cho ví dụ.</div><div><strong>2. Nhóm 2.</strong> Quan sát hình 5.2a,b SGK/137, viết CTCT và trình bày đặc điểm cấu tạo của rượu etylic.</div><div><strong>3. Nhóm 3.</strong> Trình bày ứng dụng của rượu etylic (sơ đồ tư duy + hình minh họa)</div><div><strong>4. Nhóm 4,5.</strong> Trình bày các phương pháp điều chế rượu etylic.&nbsp;</div>]]></description>
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         <pubDate>2022-03-13 10:31:59 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/2092208213</guid>
      </item>
      <item>
         <title>ngọc anh trình bày!</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/2098182847</link>
         <description><![CDATA[<div>nhiệm vụ chung<br><br></div>]]></description>
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         <pubDate>2022-03-16 14:38:16 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/2098182847</guid>
      </item>
      <item>
         <title>ngọc anh trình bày!</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/2098220800</link>
         <description><![CDATA[<div>nhiệm&nbsp;vụ riêng</div>]]></description>
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         <pubDate>2022-03-16 14:55:38 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/2098220800</guid>
      </item>
      <item>
         <title>Sản phẩm nhóm 4</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/2098297239</link>
         <description><![CDATA[]]></description>
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         <pubDate>2022-03-16 15:33:01 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/2098297239</guid>
      </item>
      <item>
         <title>Nhóm 4: Thủy, Nga, Quỳnh, Tài</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/2098302601</link>
         <description><![CDATA[]]></description>
         <enclosure url="" />
         <pubDate>2022-03-16 15:35:39 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/2098302601</guid>
      </item>
      <item>
         <title>Mạnh Tùng trình bày</title>
         <author>phuongthao7112007</author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/2098356427</link>
         <description><![CDATA[]]></description>
         <enclosure url="https://padlet-uploads.storage.googleapis.com/1631277407/b15a9b30f2fe806f0a6f3643b55d13d0/r__u_etylic.png" />
         <pubDate>2022-03-16 16:01:58 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/2098356427</guid>
      </item>
      <item>
         <title></title>
         <author>hohodio1000</author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/2098366641</link>
         <description><![CDATA[]]></description>
         <enclosure url="https://padlet-uploads.storage.googleapis.com/1471820400/198cf9c37c0784fc8dcd67a8b1d24428/H_a.png" />
         <pubDate>2022-03-16 16:06:59 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/2098366641</guid>
      </item>
      <item>
         <title></title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/2098386722</link>
         <description><![CDATA[<div>nhóm 2 : Chi, Dung, Dũng, Đại,</div>]]></description>
         <enclosure url="" />
         <pubDate>2022-03-16 16:17:15 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/2098386722</guid>
      </item>
      <item>
         <title>NV riêng nhóm 2</title>
         <author>hohodio1000</author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/2098390888</link>
         <description><![CDATA[]]></description>
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         <pubDate>2022-03-16 16:19:26 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/2098390888</guid>
      </item>
      <item>
         <title>nhóm 3 nộp bài</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/2098403560</link>
         <description><![CDATA[]]></description>
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         <pubDate>2022-03-16 16:26:18 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/2098403560</guid>
      </item>
      <item>
         <title>NHIỆM VỤ BÀI&quot;AXIT AXETIC&quot;</title>
         <author>drlonguyen</author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/2102700464</link>
         <description><![CDATA[<div><strong>NHIỆM VỤ CHUNG: XEM VIDEO VÀ HOÀN THÀNH PHIẾU THÍ NGHIỆM:</strong></div><div><strong>1. Tính axit: </strong><a href="https://www.youtube.com/watch?v=JNIq0P2irGo">https://www.youtube.com/watch?v=JNIq0P2irGo</a></div><div><strong>2. Axit axetic tác dụng với rượu etylic: </strong><a href="https://www.youtube.com/watch?v=l81G1JbCiiU">https://www.youtube.com/watch?v=l81G1JbCiiU</a><br><br><strong>- Nhóm 1:</strong> Lấy ví dụ về việc sử dụng axit axetic trong gia đình em, từ đó nêu tính chất vật lí của axit axetic.</div><div><strong>- Nhóm 2:</strong> Quan sát hình 5.4a,b/140 hãy: viết CTCT và nêu đặc điểm cấu tạo phân tử axit axetic, so sánh điểm khác so với cấu tạo của rượu etylic.</div><div><strong>- Nhóm 3:</strong> Trình bày ứng dụng của axit axetic ( sơ đồ tư duy có hình ảnh minh họa)</div><div><strong>- Nhóm 4,5:</strong> Trình bày các cách điều chế axit axetic.</div><div><br><br></div>]]></description>
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         <pubDate>2022-03-19 03:06:48 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/2102700464</guid>
      </item>
      <item>
         <title></title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/2121657888</link>
         <description><![CDATA[]]></description>
         <enclosure url="https://padlet-uploads.storage.googleapis.com/1648626692/883f778596759cb2dca52c77756e44a1/image_2022_03_30_214917.png" />
         <pubDate>2022-03-30 14:49:31 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/2121657888</guid>
      </item>
      <item>
         <title></title>
         <author>phuongthao7112007</author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/2121693418</link>
         <description><![CDATA[]]></description>
         <enclosure url="https://padlet-uploads.storage.googleapis.com/1631277407/e36bb105e3f90e156c332d6b394d9395/A_nh_chu_p_ma_n_hi_nh_2022_03_30_220545.png" />
         <pubDate>2022-03-30 15:06:53 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/2121693418</guid>
      </item>
      <item>
         <title></title>
         <author>phuongthao7112007</author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/2121693785</link>
         <description><![CDATA[]]></description>
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         <pubDate>2022-03-30 15:07:04 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/2121693785</guid>
      </item>
      <item>
         <title></title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/2121761362</link>
         <description><![CDATA[]]></description>
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         <pubDate>2022-03-30 15:38:04 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/2121761362</guid>
      </item>
      <item>
         <title></title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/2121762020</link>
         <description><![CDATA[]]></description>
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         <pubDate>2022-03-30 15:38:24 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/2121762020</guid>
      </item>
      <item>
         <title>Đặng Quốc Bảo trình bày</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/2121763208</link>
         <description><![CDATA[]]></description>
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         <pubDate>2022-03-30 15:38:58 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/2121763208</guid>
      </item>
      <item>
         <title>Sản phẩm nhóm 4</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/2121811896</link>
         <description><![CDATA[]]></description>
         <enclosure url="https://padlet-uploads.storage.googleapis.com/1553827043/abd5eb2bb6872c326600c2c63c242a0c/Axit_axetic__nh_m_4_.pdf" />
         <pubDate>2022-03-30 16:03:23 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/2121811896</guid>
      </item>
      <item>
         <title></title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/2121878166</link>
         <description><![CDATA[]]></description>
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         <pubDate>2022-03-30 16:36:35 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/2121878166</guid>
      </item>
      <item>
         <title>NHIỆM VỤ BÀI “ MỐI QUAN HỆ GIỮA ETILEN - RƯỢU ETYLIC VÀ AXIT AXETIC”</title>
         <author>drlonguyen</author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/2127226908</link>
         <description><![CDATA[<div><strong>- Nhóm 1:</strong> Viết PTHH thực hiện sơ đồ chuyển đổi phần I/SGK/114</div><div><strong>- Nhóm 2: </strong>Phân loại các BT SGK/114 + trình bày bài 1 + 2</div><div><strong>- Nhóm 3: </strong>Trình bày bài tập 3.</div><div><strong>- Nhóm 4,5: </strong>Trình bày BT 4,5</div>]]></description>
         <enclosure url="" />
         <pubDate>2022-04-03 14:34:57 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/2127226908</guid>
      </item>
      <item>
         <title>nhóm 1:</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/2132767942</link>
         <description><![CDATA[<div>bảo&nbsp;không tham gia làm nhóm!</div>]]></description>
         <enclosure url="" />
         <pubDate>2022-04-06 14:39:39 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/2132767942</guid>
      </item>
      <item>
         <title>bảo trình bày!</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/2132850295</link>
         <description><![CDATA[]]></description>
         <enclosure url="https://padlet-uploads.storage.googleapis.com/1497998343/31771fb858ba19fbd7ce8e263d4034a2/png_20220406_220442_0000.png" />
         <pubDate>2022-04-06 15:19:26 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/2132850295</guid>
      </item>
      <item>
         <title>NHIỆM VỤ BÀI THỰC HÀNH:”TÍNH CHẤT CỦA RƯỢU VÀ AXIT”</title>
         <author>drlonguyen</author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/2144858054</link>
         <description><![CDATA[<div>1. Tính axit của axit axetic: <a href="https://www.youtube.com/watch?v=sYuGUUakA7U">https://www.youtube.com/watch?v=sYuGUUakA7U</a></div><div>2. Phản ứng của rượu etylic và axit axetic: <a href="https://www.youtube.com/watch?v=l81G1JbCiiU">https://www.youtube.com/watch?v=l81G1JbCiiU</a></div><div>&nbsp;</div><div><strong>Hoàn thành bản tường trình:<br></strong><br></div>]]></description>
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         <pubDate>2022-04-15 12:09:55 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/2144858054</guid>
      </item>
      <item>
         <title></title>
         <author>vuphuongthuy2403</author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/2144968163</link>
         <description><![CDATA[]]></description>
         <enclosure url="https://padlet-uploads.storage.googleapis.com/1429665234/46e2df16c2873e57dc5e66b8a9f398da/image.png" />
         <pubDate>2022-04-15 15:04:19 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/2144968163</guid>
      </item>
      <item>
         <title>Vũ Thị Hải Anh trình bày</title>
         <author></author>
         <link>https://padlet.com/drlonguyen/HOA9A/wish/2144998497</link>
         <description><![CDATA[]]></description>
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         <pubDate>2022-04-15 15:48:44 UTC</pubDate>
         <guid>https://padlet.com/drlonguyen/HOA9A/wish/2144998497</guid>
      </item>
      <item>
         <title></title>
         <author></author>
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