CHEMISTRY EC015 by YUSMAWATI BINTI YUSOFF BM https://padlet.com/bm2369/9eib1nzzkrxjpdrm KAT1/T2 AKT3/T4 en-us 2021-08-02 15:09:39 UTC 2025-09-25 10:42:59 UTC hello@padlet.com bm2369 https://padlet.com/bm2369/9eib1nzzkrxjpdrm/wish/1666843989 Soalan objektif, jom jwb sama2]]> 2021-08-02 15:14:35 UTC https://padlet.com/bm2369/9eib1nzzkrxjpdrm/wish/1666843989 Nota Kuliah (Live) 1.1 & 1.2 bm2369 https://padlet.com/bm2369/9eib1nzzkrxjpdrm/wish/1666861315 Nota kuliah 29/7/2021]]> 2021-08-02 15:35:17 UTC https://padlet.com/bm2369/9eib1nzzkrxjpdrm/wish/1666861315 Kuliah Live 29/7/2021 bm2369 https://padlet.com/bm2369/9eib1nzzkrxjpdrm/wish/1666864938 Topic: Matter
Subtopic 1.1 & 1.2]]> 2021-08-02 15:40:01 UTC https://padlet.com/bm2369/9eib1nzzkrxjpdrm/wish/1666864938 Answer for Tutorial 1.2 (1-6) bm2369 https://padlet.com/bm2369/9eib1nzzkrxjpdrm/wish/1668724058 1 (a)        C12H22O11          = 12(12.0) +22(1.0) + 11(16.0) = 342
(b)        Mg3(PO4)2         = 3(24.3) + 2[31.0 + 4(16.0)] = 262.9
(c)        Ca3(PO4)2         = 3(40.1) + 2[31.0 + 4(16.0)] = 310.3
(d)        (NH­4)2SO4         = 2[14.0 + 4(1.0)] + 32.07 + 4(16.0) = 132.1
(e)        CuSO4.5H2O     = 63.6 + 32.07 + 4(16.0) + 5[2(1.0) + 16.0] = 249.7

2. 2.324´10-23 g

3.(a) 1.260 mol Al(OH)3
(b) 64.452 mol Ni
(c) 4.153´10-1 mol C2H6O
(d)3.00 ´ 10-2 mol O2
(e) 0.250 mol H2SO4
(f) 0.536 mol N2 

4. (a) 1.36 x1022   atoms 
(b) 2.79 x1022   atoms
(c) 3.956 x1024   molecules
 (d) 3.956 x1024   molecules
 (e) 2.68 x 1025  H atoms 
(f)6.02´1023 atoms C

5. (a) 323.2 g mol–1 
(b) 3.34 ´10-3 mol
(c) 2.01 ´1021 molecules
(d) 4.02 ´ 1022 H atoms
 (e) 0.321 g C

6. (a) 7.95 L
(b) 16.35 g
(c) 13.81 L

]]> 2021-08-04 08:46:17 UTC https://padlet.com/bm2369/9eib1nzzkrxjpdrm/wish/1668724058 Answer for Tutorial 1.2 (7-17) bm2369 https://padlet.com/bm2369/9eib1nzzkrxjpdrm/wish/1668730667 7. (a) 3.0 x 10-3 mol NH3 
(b) 2.258 ´ 1021 O2 molecule
 (c) 0.090 g

8. (a) 4.4 g 
(b) (i) 0.05 mol P4O10 
(ii) 14.2 g
(iii) 1.12 L 
(iv)1.20 L 

9 (a) 8.04 x 10-4 mol NO                                             
(b) 0.52%

10. (a) Empirical formula   -      formula that shows the simplest ratio of atoms of different elements                                              present in a  molecule
                        Molecular formula    -     formula that shows the actual number of atoms of different elements present in a molecule

(b) C3H8N 
(c) C6H16N2

11. empirical formula: C4H5ON2 
Molecular formula  =  C8H10O2N4 

12. b(i) 172.4 ml
(ii) 0.72M
(iii) 0.73 m 

13. 0.891 M @ mol L–1 @ mol dm-3

14. (a) 0.3 m   
(b) 0.3 M 
(c) 0.00537
(d) 1.723 %

15. (a) 0.159            
(b) 29.58% 
(c) 9.83 M
                        
16 (a) 27.75 M 
(b) 2.882 ´ 10–3 L @ 2.882 mL 

17. (a)0.10 M 
(b) 0.00125 mol H2SO4 
]]> 2021-08-04 08:57:29 UTC https://padlet.com/bm2369/9eib1nzzkrxjpdrm/wish/1668730667 Pre lab Experiment 1 bm2369 https://padlet.com/bm2369/9eib1nzzkrxjpdrm/wish/1668840319 Boleh jawab soalan Pre Lab ya..nk bcg esok]]> 2021-08-04 12:25:38 UTC https://padlet.com/bm2369/9eib1nzzkrxjpdrm/wish/1668840319 Quiz 1 bm2369 https://padlet.com/bm2369/9eib1nzzkrxjpdrm/wish/1668882901 1.1 Atoms and Molecules
1.2 MOle Concept]]> 2021-08-04 13:13:48 UTC https://padlet.com/bm2369/9eib1nzzkrxjpdrm/wish/1668882901 Kuliah Live 5/8/2021 bm2369 https://padlet.com/bm2369/9eib1nzzkrxjpdrm/wish/1669572190 1.3 Stoichiometry]]> 2021-08-05 03:33:58 UTC https://padlet.com/bm2369/9eib1nzzkrxjpdrm/wish/1669572190 Tutorial 1.2 no 15 bm2369 https://padlet.com/bm2369/9eib1nzzkrxjpdrm/wish/1673853921 2021-08-10 07:32:12 UTC https://padlet.com/bm2369/9eib1nzzkrxjpdrm/wish/1673853921 Tutorial 1.2 No 11 bm2369 https://padlet.com/bm2369/9eib1nzzkrxjpdrm/wish/1673854629 2021-08-10 07:33:09 UTC https://padlet.com/bm2369/9eib1nzzkrxjpdrm/wish/1673854629 Template Report Experiment 1 bm2369 https://padlet.com/bm2369/9eib1nzzkrxjpdrm/wish/1673855366 2021-08-10 07:34:06 UTC https://padlet.com/bm2369/9eib1nzzkrxjpdrm/wish/1673855366 Video Amali Exp 1 bm2369 https://padlet.com/bm2369/9eib1nzzkrxjpdrm/wish/1673864147 2021-08-10 07:46:11 UTC https://padlet.com/bm2369/9eib1nzzkrxjpdrm/wish/1673864147 Tutorial 1.2 No 12 bm2369 https://padlet.com/bm2369/9eib1nzzkrxjpdrm/wish/1674252706 2021-08-10 15:23:56 UTC https://padlet.com/bm2369/9eib1nzzkrxjpdrm/wish/1674252706 Tutorial 1.2 No 16 bm2369 https://padlet.com/bm2369/9eib1nzzkrxjpdrm/wish/1674255105 2021-08-10 15:25:45 UTC https://padlet.com/bm2369/9eib1nzzkrxjpdrm/wish/1674255105 Tutorial 1.2 No 17 bm2369 https://padlet.com/bm2369/9eib1nzzkrxjpdrm/wish/1674257600 2021-08-10 15:27:31 UTC https://padlet.com/bm2369/9eib1nzzkrxjpdrm/wish/1674257600 Tutorial 1.2 No 14 bm2369 https://padlet.com/bm2369/9eib1nzzkrxjpdrm/wish/1674259356 2021-08-10 15:28:46 UTC https://padlet.com/bm2369/9eib1nzzkrxjpdrm/wish/1674259356 Tutorial 1.2 No 13 bm2369 https://padlet.com/bm2369/9eib1nzzkrxjpdrm/wish/1674260316 2021-08-10 15:29:28 UTC https://padlet.com/bm2369/9eib1nzzkrxjpdrm/wish/1674260316 Tutorial 1.3 No 1-2 https://padlet.com/bm2369/9eib1nzzkrxjpdrm/wish/1675666422 2021-08-11 16:00:30 UTC https://padlet.com/bm2369/9eib1nzzkrxjpdrm/wish/1675666422 Tutorial 1.3 No 3-9 bm2369 https://padlet.com/bm2369/9eib1nzzkrxjpdrm/wish/1679956672 3. 8.46
4. 36.0
5. d) 66.7
e) 90.62%
6. b) 0.09 g
c) 0.067 M
d) 0.00262
e) 57.14%
7 b) (iii) 0.05045 mol
8 b) 40.23%
9 c) 0.0110 M]]> 2021-08-16 05:02:05 UTC https://padlet.com/bm2369/9eib1nzzkrxjpdrm/wish/1679956672 Tutorial 2.1 bm2369 https://padlet.com/bm2369/9eib1nzzkrxjpdrm/wish/1681841064 4(b) 7.317 x 1014
5 b) i) 97.23 nm and = 3.085´1015 s-1
ii) = 1282 nm and                                                = 2.340´1014 s-1
6 a) red = 3.031´10-19 J @ 3.031´10-22 kJ
 
green= 4.09´10-19 J @ 4.09´10-22 kJ

blue  = 4.581´10-19 J @ 4.581´10-22 kJ
b) red n2 =3
green       n2 =4
blue       n2 =5 

7.energy = - 4.578´10-19 J @ 4.578´10-22 kJ
wavelength = 4.3447´10-7 m @ 434.5 nm

8. wavelength        = 6.563´10-7 m @ 656.3 nm 

frequency        = 4.571´1014 s-1

9. wavelength = 5.45´10-8 m @ 54.5 nm
energy = 2195.558 kJ mol-1 

10.  = 1312.360 kJ mol-1 
]]> 2021-08-17 08:21:49 UTC https://padlet.com/bm2369/9eib1nzzkrxjpdrm/wish/1681841064 Kuliah Live 12/8/2021 bm2369 https://padlet.com/bm2369/9eib1nzzkrxjpdrm/wish/1681845854 2021-08-17 08:26:26 UTC https://padlet.com/bm2369/9eib1nzzkrxjpdrm/wish/1681845854 Kuliah Live 19/8/2021 bm2369 https://padlet.com/bm2369/9eib1nzzkrxjpdrm/wish/1688053942 2021-08-20 15:06:30 UTC https://padlet.com/bm2369/9eib1nzzkrxjpdrm/wish/1688053942 TASK GROUP 2 https://padlet.com/bm2369/9eib1nzzkrxjpdrm/wish/1735541738 2021-09-13 09:27:31 UTC https://padlet.com/bm2369/9eib1nzzkrxjpdrm/wish/1735541738 TASK GROUP 5 https://padlet.com/bm2369/9eib1nzzkrxjpdrm/wish/1736429953 https://www.powtoon.com/c/c9BKJoqMRdX/1/m]]> 2021-09-13 15:07:54 UTC https://padlet.com/bm2369/9eib1nzzkrxjpdrm/wish/1736429953 TASK GROUP 4 https://padlet.com/bm2369/9eib1nzzkrxjpdrm/wish/1737736909 2021-09-14 00:49:39 UTC https://padlet.com/bm2369/9eib1nzzkrxjpdrm/wish/1737736909 Tutorial 3.2 Soalan 3_6 bm2369 https://padlet.com/bm2369/9eib1nzzkrxjpdrm/wish/1744170621 2021-09-15 23:29:12 UTC https://padlet.com/bm2369/9eib1nzzkrxjpdrm/wish/1744170621 Tutorial 3.2 Soalan 7_10 bm2369 https://padlet.com/bm2369/9eib1nzzkrxjpdrm/wish/1744173423 2021-09-15 23:31:15 UTC https://padlet.com/bm2369/9eib1nzzkrxjpdrm/wish/1744173423 TASK GROUP 3 https://padlet.com/bm2369/9eib1nzzkrxjpdrm/wish/1751307960 2021-09-19 07:31:59 UTC https://padlet.com/bm2369/9eib1nzzkrxjpdrm/wish/1751307960 Task group 1 https://padlet.com/bm2369/9eib1nzzkrxjpdrm/wish/1763173248 2021-09-23 14:26:16 UTC https://padlet.com/bm2369/9eib1nzzkrxjpdrm/wish/1763173248 FORMATION OF IONIC BOND https://padlet.com/bm2369/9eib1nzzkrxjpdrm/wish/1772656735 2021-09-27 23:35:58 UTC https://padlet.com/bm2369/9eib1nzzkrxjpdrm/wish/1772656735