This document contains information about chemical formulas and relative molecular/formula masses. It includes a list of common ions and their formulas. There are also exercises providing the chemical formulas of compounds and calculating their relative molecular/formula masses. Some example calculations shown include copper(II) chloride with a relative formula mass of 135 and potassium chloride with a relative formula mass of 74.5. The document appears to be teaching materials for a chemistry module covering chemical formulas and relative molecular/formula mass calculations.

1. 1
Nama: ………………………………………. Kelas : ……………..
Tarikh : ……………..
MODUL 1: Formula Kimia
Exercise 1
Nama ion
Formula
ion
Nama Sebatian Formula sebatian
Ion natrium Na+ Natrium klorida
Ion kalium K+ Kalium bromida
Ion argentum Ag+ Magnesium klorida
Ion hidrogen H+ Kuprum(II) oksida
Ion kuprum(I) Cu+ Kalium oksida
Ion kuprum(II) Cu2+ Ferum(II) oksida
Ion magnesium Mg2+ Stanum(II) oksida
Ion kalsium Ca2+ Zink klorida
Ion zink Zn2+ Kuprum(I) klorida
Ion barium Ba2+ Barium klorida
Ion ferum(II) Fe2+ Argentum oksida
Ion ferum(III) Fe3+ PLumbum(II) klorida
Ion plumbum(II) Pb2+ Magnesium oksida
Ion plumbum(IV) Pb4+ Plumbum(II) iodida
Ion stanum(II) Sn2+ Aluminium klorida
Ion stanum(IV) Sn4+ Aluminium oksida
Ion aluminium Al3+ Ferum(III) oksida
Ion litium Li+ Kalsium oksida
Ion florida F - Stanum(IV) oksida
Ion klorida Cl - Magnesium bromida
Ion bromide Br - Plumbum(II) bromida
Ion iodide I - Kalium klorida
Ion oksida O 2- Natrium iodide
Ion hidroksida OH - Ferum(III) klorida
Ion nitrat NO3- Plumbum(IV) oksida
Ion sulfat SO42 - Natrium oksida
Ion karbonat CO3 2 - Argentum bromida
Ion ammonium NH4+ Zink oksida
Ion fosfat PO43 - Kalsium klorida

2. 2
Exercise 2
Magnesium nitrat Kalsium karbonat
Kalium sulfat Ammonium klorida
Ferum(II) sulfat Ammonium nitrat
Kuprum(II) hidroksida Ammonium karbonat
Kuprum(II) karbonat Ammonium sulfat
Plumbum(II) sulfat Ammonium fosfat
Kalsium karbonat Kalium hidroksida
Zink hidroksida Aluminum sulfat
Kuprum(II) nitrat Ferum(III) sulfat
Stanum(II) hidroksida Aluminum nitrat
Kalium nitrat Magnesium hidroksida
Natrium karbonat Kalium fosfat
Zink nitrat Kalsium nitrat
Barium sulfat Ferum(III) nitrat
Ferum(III) hidroksida Ferum(II) karbonat
Magnesium karbonat Natrium nitrat
Argentum sulfat Barium hidroksida
Natrium hidroksida Kalium karbonat
Zink sulfat Argentum hidroksida

3. 3
Exercise 3: Calculating Relative Molecular/ Formulae mass
No Name of Compound
Compound
formulae
Relative Molecular mass /
Relative Formulae mass
Answer
1 Copper(II) chloride CuCl2 64 + 2(35.5) = 135 135
2 Potassium chloride 74.5
3 Sodium sulphate 142
4 Magnesium sulphate 120
5 Zinc carbonate 125
6 Potassium nitrate 101
7 Iron(II) oxide 72
8 Calcium nitrate 164
9 Barium sulphate 233
10 Tin(II) chloride 190
11 Lead(II) oxide 223
12 Aluminum chloride 133.5
13 Ammonium nitrate 80
14 Sodium nitrate 85
15 Silver oxide 232
16 Iron(III) chloride 162.5
17 Sodium bromide 103
18 Sodium oxide 62
19 Lead(II) sulphate 303
20 Lithium oxide 30
21 Magnesium nitrate 148
22 Potassium iodide 166
23 Potassium sulphate 174
24 Magnesium oxide 40
25 Iron(II) carbonate 116
26 Carbon dioxide 44
27 Copper(II) carbonate 124

4. 4
28 Sodium iodide 150
29 Ammonium nitrate 80
30 Copper(II) hydroxide 98
31 Calcium carbonate 100
32 Ammonium sulphate 132
33 Sodium carbonate 106
34 Silver sulphate 312
35 Aluminum oxide 102
36 Aluminum sulphate 342
37 Iron(III) oxide 160
38 Iron(III) sulphate 400
39 Potassium carbonate 138
40 Ethanoic Acid 60
41 Sulfuric acid 98
42 Hydrochloric acid 36.5
43 Nitric acid 63
44 Magnesium hydroxide 58
45 Copper(II) nitrate 188
46 Magnesium etanoat (CH3COO)2Mg 142
47
Magnesium sulphate
hydrate
MgSO4.7H2O 246
48
Copper(II) sulphate
hydrate
CuSO4.5H2O 250
49 Butanoic acid C3H7COOH 88
50
Potassium
manganese(VII)
KMnO4 158
51 Tetrachlorometane CCl4 154
52
Potassium
dichromate(VI)
K2Cr2O7 294
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