C4 Chemical Calculations by S Littlewood-Horner https://padlet.com/misslh/10XCh1C4 Create a padlet account so I know you have all contributed. Double click to add a note, link to a picture/doodle/video or website. Pose exam style questions for each other too! en-us 2017-01-29 22:12:40 UTC 2023-02-06 02:13:01 UTC hello@padlet.com How to do titrations misslh https://padlet.com/misslh/10XCh1C4/wish/150123064 An overview of your required practical ]]> 2017-01-29 22:21:22 UTC https://padlet.com/misslh/10XCh1C4/wish/150123064 How to do titration calculations misslh https://padlet.com/misslh/10XCh1C4/wish/150123093 Watch this ahead of next week's lesson so you have a head start on what will be going on in class!]]> 2017-01-29 22:22:04 UTC https://padlet.com/misslh/10XCh1C4/wish/150123093 How to balance chemical equations misslh https://padlet.com/misslh/10XCh1C4/wish/150123224 2017-01-29 22:24:38 UTC https://padlet.com/misslh/10XCh1C4/wish/150123224 How to use moles misslh https://padlet.com/misslh/10XCh1C4/wish/150123256 2017-01-29 22:25:06 UTC https://padlet.com/misslh/10XCh1C4/wish/150123256 t_dunkley_3 https://padlet.com/misslh/10XCh1C4/wish/150178949 2017-01-30 10:26:16 UTC https://padlet.com/misslh/10XCh1C4/wish/150178949 How to calculate titrations t_dunkley_3 https://padlet.com/misslh/10XCh1C4/wish/150179072 Step 1: Convert all volumes to dm3

27.5 cm3 = 27.5 ÷ 1000 = 0.0275 dm3

25.0 cm3 = 25.0 ÷ 1000 = 0.025 dm3

Step 2: Calculate the number of moles of the substance where the volume and concentration are known

number of moles = concentration × volume

number of moles of hydrochloric acid = 0.2 × 0.0275 = 0.0055 mol (5.5 × 10–3mol)

Step 3: Calculate the unknown concentration

We can say that 0.0055 mol of acid will react with 0.0055 mol of alkali

concentration of alkali = moles ÷ volume = 0.0055 ÷ 0.025 = 0.22 mol/dm3

]]> 2017-01-30 10:26:53 UTC https://padlet.com/misslh/10XCh1C4/wish/150179072 How to calculate moles o_speechley_3 https://padlet.com/misslh/10XCh1C4/wish/150179673 To work out the number of moles in an atom you need to:

Number of moles = Mass (g) / Relative atomic mass or Mass (g) / relative formula mass]]> 2017-01-30 10:30:02 UTC https://padlet.com/misslh/10XCh1C4/wish/150179673 j_marriott_3 https://padlet.com/misslh/10XCh1C4/wish/150179973 The Mole is based on Avogardos number
•6.022 x 10 to the power of 23 particles in one mole
]]> 2017-01-30 10:31:52 UTC https://padlet.com/misslh/10XCh1C4/wish/150179973 How to get the Relative Formula Mass l_stiles_3 https://padlet.com/misslh/10XCh1C4/wish/150180038  = Add up the relative atomic masses of the elements in it, in the ratio shown by it's formula.]]> 2017-01-30 10:32:15 UTC https://padlet.com/misslh/10XCh1C4/wish/150180038 Mole e_charlton_3 https://padlet.com/misslh/10XCh1C4/wish/150180131 One mole of any substance is its relative formula mass, in grams ]]> 2017-01-30 10:32:54 UTC https://padlet.com/misslh/10XCh1C4/wish/150180131 giant chemical structures a_williams_3 https://padlet.com/misslh/10XCh1C4/wish/150180170 giant metalic structures are verry good conductors of both heat and electricity due to their free electrons which can move freely.

]]> 2017-01-30 10:33:13 UTC https://padlet.com/misslh/10XCh1C4/wish/150180170 Number of moles= l_stiles_3 https://padlet.com/misslh/10XCh1C4/wish/150180511 mass(g)/Ar   or  mass(g)/Mr]]> 2017-01-30 10:35:14 UTC https://padlet.com/misslh/10XCh1C4/wish/150180511 https://www.youtube.com/watch?v=AsqEkF7hcII r_arockiam_3 https://padlet.com/misslh/10XCh1C4/wish/150180724 by Rushik]]> 2017-01-30 10:36:34 UTC https://padlet.com/misslh/10XCh1C4/wish/150180724 Isotope j_marriott_3 https://padlet.com/misslh/10XCh1C4/wish/150180805 Same number of protons different number of neutrons
-- For example? (SLI)]]> 2017-01-30 10:37:00 UTC https://padlet.com/misslh/10XCh1C4/wish/150180805 http://www.bbc.co.uk/education/subjects/zs6hvcw r_babicka_3 https://padlet.com/misslh/10XCh1C4/wish/150180918 2017-01-30 10:37:29 UTC https://padlet.com/misslh/10XCh1C4/wish/150180918 r_babicka_3 https://padlet.com/misslh/10XCh1C4/wish/150181020 2017-01-30 10:37:58 UTC https://padlet.com/misslh/10XCh1C4/wish/150181020 j_marriott_3 https://padlet.com/misslh/10XCh1C4/wish/150181274
]]> 2017-01-30 10:39:35 UTC https://padlet.com/misslh/10XCh1C4/wish/150181274 Equation For Moles sussjackr https://padlet.com/misslh/10XCh1C4/wish/150181321 2017-01-30 10:39:52 UTC https://padlet.com/misslh/10XCh1C4/wish/150181321 avogardo constan echudley1 https://padlet.com/misslh/10XCh1C4/wish/150181337 2017-01-30 10:39:59 UTC https://padlet.com/misslh/10XCh1C4/wish/150181337 a lattice structure cannot conduct electricity but once melted it can! katmai3355 https://padlet.com/misslh/10XCh1C4/wish/150181406 -- Why? (SLI)]]> 2017-01-30 10:40:23 UTC https://padlet.com/misslh/10XCh1C4/wish/150181406 c4 e_charlton_3 https://padlet.com/misslh/10XCh1C4/wish/150181410

Problem 2
]]> 2017-01-30 10:40:25 UTC https://padlet.com/misslh/10XCh1C4/wish/150181410 Relative Mass r_sharples_3 https://padlet.com/misslh/10XCh1C4/wish/150181411 Relative atomic mass- The number of Protons and Neutrons in an element
Relative formula mass- Relative mass of several elements in an equation]]> 2017-01-30 10:40:25 UTC https://padlet.com/misslh/10XCh1C4/wish/150181411 j_marriott_3 https://padlet.com/misslh/10XCh1C4/wish/150181429
]]> 2017-01-30 10:40:31 UTC https://padlet.com/misslh/10XCh1C4/wish/150181429 Kerboodle Book Link https://padlet.com/misslh/10XCh1C4/wish/150181511 2017-01-30 10:40:59 UTC https://padlet.com/misslh/10XCh1C4/wish/150181511 so_taylor_3 https://padlet.com/misslh/10XCh1C4/wish/150181630 number of moles= mass (g) / Ar   or     magg (g) / Mr]]> 2017-01-30 10:41:39 UTC https://padlet.com/misslh/10XCh1C4/wish/150181630 http://fp.sn.ifl.net/filterpages/4364-8760.htm#f=1&c=8760&d=200&p=4373&t=3127603&u=http://orig12.deviantart.net/05dc/f/2007/322/9/9/the_science_mole_by_kiriakuma.jpg&ip=10.3.104.110 https://padlet.com/misslh/10XCh1C4/wish/150181663 2017-01-30 10:41:51 UTC https://padlet.com/misslh/10XCh1C4/wish/150181663 Something to do with C4 e_charlton_3 https://padlet.com/misslh/10XCh1C4/wish/150181673
]]> 2017-01-30 10:41:54 UTC https://padlet.com/misslh/10XCh1C4/wish/150181673 l_godfrey_3 https://padlet.com/misslh/10XCh1C4/wish/150181797 http://pladlet.com/miss_l_horner/10xch1c4 ]]> 2017-01-30 10:42:35 UTC https://padlet.com/misslh/10XCh1C4/wish/150181797 r_arockiam_3 https://padlet.com/misslh/10XCh1C4/wish/150181907 2017-01-30 10:43:15 UTC https://padlet.com/misslh/10XCh1C4/wish/150181907 r_arockiam_3 https://padlet.com/misslh/10XCh1C4/wish/150182342 2017-01-30 10:45:39 UTC https://padlet.com/misslh/10XCh1C4/wish/150182342 Percentage Yield r_sharples_3 https://padlet.com/misslh/10XCh1C4/wish/150182358 The actual mass of the product that is obtained
]]> 2017-01-30 10:45:46 UTC https://padlet.com/misslh/10XCh1C4/wish/150182358 Helium e_charlton_3 https://padlet.com/misslh/10XCh1C4/wish/150182393
]]> 2017-01-30 10:45:58 UTC https://padlet.com/misslh/10XCh1C4/wish/150182393 Percentage Yield sussjackr https://padlet.com/misslh/10XCh1C4/wish/150182525 2017-01-30 10:46:39 UTC https://padlet.com/misslh/10XCh1C4/wish/150182525 Somthing e_charlton_3 https://padlet.com/misslh/10XCh1C4/wish/150182933
]]> 2017-01-30 10:48:22 UTC https://padlet.com/misslh/10XCh1C4/wish/150182933 Atom economy r_sharples_3 https://padlet.com/misslh/10XCh1C4/wish/150183050
The amount of the initial material that becomes a useful product.
]]> 2017-01-30 10:48:56 UTC https://padlet.com/misslh/10XCh1C4/wish/150183050 https://padlet.com/misslh/10XCh1C4/wish/150183070 2017-01-30 10:49:00 UTC https://padlet.com/misslh/10XCh1C4/wish/150183070 Stop using my post. e_charlton_3 https://padlet.com/misslh/10XCh1C4/wish/150183171 Stop using my post plz.


]]> 2017-01-30 10:49:37 UTC https://padlet.com/misslh/10XCh1C4/wish/150183171 What is Relative atomic mass? katmai3355 https://padlet.com/misslh/10XCh1C4/wish/150183174 https://www.youtube.com/watch?v=aqfQKzbTCVo]]> 2017-01-30 10:49:38 UTC https://padlet.com/misslh/10XCh1C4/wish/150183174 Moles from masses katmai3355 https://padlet.com/misslh/10XCh1C4/wish/150183287 https://www.youtube.com/watch?v=0lNgC0AcDvk]]> 2017-01-30 10:50:15 UTC https://padlet.com/misslh/10XCh1C4/wish/150183287 https://padlet.com/misslh/10XCh1C4/wish/150183358 2017-01-30 10:50:44 UTC https://padlet.com/misslh/10XCh1C4/wish/150183358 https://www.google.co.uk/search?q=c4+chemical+changes&safe=strict&espv=2&biw=1920&bih=974&source=lnms&tbm=isch&sa=X&ved=0ahUKEwiA6MLs1unRAhVLLsAKHepxC20Q_AUIBigB#imgrc=Duiqzd87YQAbHM%3A e_charlton_3 https://padlet.com/misslh/10XCh1C4/wish/150183698 https://www.google.co.uk/search?q=c4+chemical+changes&safe=strict&espv=2&biw=1920&bih=974&source=lnms&tbm=isch&sa=X&ved=0ahUKEwiA6MLs1unRAhVLLsAKHepxC20Q_AUIBigB#imgrc=Duiqzd87YQAbHM%3A]]> 2017-01-30 10:52:46 UTC https://padlet.com/misslh/10XCh1C4/wish/150183698 j_marriott_3 https://padlet.com/misslh/10XCh1C4/wish/150183814
]]> 2017-01-30 10:53:26 UTC https://padlet.com/misslh/10XCh1C4/wish/150183814 frayawebber https://padlet.com/misslh/10XCh1C4/wish/150183997 http://www.bbc.co.uk/education/guides/zysk7ty/revision

]]> 2017-01-30 10:54:32 UTC https://padlet.com/misslh/10XCh1C4/wish/150183997 The higher the number of charges on the ions, the stronger the ionic bond. megan_heath01 https://padlet.com/misslh/10XCh1C4/wish/150184048 2017-01-30 10:54:51 UTC https://padlet.com/misslh/10XCh1C4/wish/150184048 z_kingdom_3 https://padlet.com/misslh/10XCh1C4/wish/150184071


]]> 2017-01-30 10:54:58 UTC https://padlet.com/misslh/10XCh1C4/wish/150184071 Moles e_charlton_3 https://padlet.com/misslh/10XCh1C4/wish/150184108
]]> 2017-01-30 10:55:11 UTC https://padlet.com/misslh/10XCh1C4/wish/150184108 https://padlet.com/misslh/10XCh1C4/wish/150184168 2017-01-30 10:55:31 UTC https://padlet.com/misslh/10XCh1C4/wish/150184168 https://padlet.com/misslh/10XCh1C4/wish/150184170 2017-01-30 10:55:32 UTC https://padlet.com/misslh/10XCh1C4/wish/150184170 https://padlet.com/misslh/10XCh1C4/wish/150184175 2017-01-30 10:55:33 UTC https://padlet.com/misslh/10XCh1C4/wish/150184175 https://padlet.com/misslh/10XCh1C4/wish/150184180 2017-01-30 10:55:34 UTC https://padlet.com/misslh/10XCh1C4/wish/150184180 4+4-55+9=2 l_godfrey_3 https://padlet.com/misslh/10XCh1C4/wish/150184206 2017-01-30 10:55:42 UTC https://padlet.com/misslh/10XCh1C4/wish/150184206 Giant ionic lattices megan_heath01 https://padlet.com/misslh/10XCh1C4/wish/150184298 Giant ionic lattices don't conduct electricity when they are solids because there arent any free electrons however, when the solids melt, the electrons become free and they can then conduct electricity. Because of this, compounds that are in contact with electricity must have a high melting and boiling point so that they dont conduct electricity.]]> 2017-01-30 10:56:09 UTC https://padlet.com/misslh/10XCh1C4/wish/150184298 frayawebber https://padlet.com/misslh/10XCh1C4/wish/150184299 https://www.youtube.com/watch?v=UI4SSAgYy_s

]]> 2017-01-30 10:56:10 UTC https://padlet.com/misslh/10XCh1C4/wish/150184299 Mole o_speechley_3 https://padlet.com/misslh/10XCh1C4/wish/150184420 2017-01-30 10:56:51 UTC https://padlet.com/misslh/10XCh1C4/wish/150184420 https://padlet.com/misslh/10XCh1C4/wish/150185460 2017-01-30 11:03:22 UTC https://padlet.com/misslh/10XCh1C4/wish/150185460 willdm34 https://padlet.com/misslh/10XCh1C4/wish/150658633 Sorry about the quality

]]> 2017-01-31 19:20:51 UTC https://padlet.com/misslh/10XCh1C4/wish/150658633