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Worksheets

Relative Formula Mass

Total questions: 15

Worksheet time: 8mins

Name
Class
Date
1.

Calculate the relative formula mass of

copper (ii) chloride, CuCl2


[Relative atomic mass:

O = 16 ; Al = 27 ; S = 32 ; Cl = 35.5 ; Cu = 64 ]

a)

90

b)

135

c)

137

d)

99.5

2.

Calculate the relative formula mass of

aluminium sulphate, Al2(SO4)3


[Relative atomic mass:

O = 16 ; Al = 27 ; S = 32 ; Cl = 35.5 ; Cu = 64 ]

a)

150

b)

315

c)

342

d)

331

3.

Calculate the relative formula mass of

copper (i) sulphate, Cu2SO4.


[Relative atomic mass:

O = 16 ; Al = 27 ; S = 32 ; Cl = 35.5 ; Cu = 64 ]

a)

224

b)

160

c)

112

d)

128

4.

Calculate the relative formula mass of

copper (ii) sulphate, CuSO4.


[Relative atomic mass:

O = 16 ; Al = 27 ; S = 32 ; Cl = 35.5 ; Cu = 64 ]

a)

100

b)

112

c)

200

d)

160

5.

Calculate the relative formula mass of

aluminium oxide, Al2O3


[Relative atomic mass:

O = 16 ; Al = 27 ]

a)

70

b)

102

c)

43

d)

113

6.

Calculate the relative formula mass of

hydrochloric acid, HCl


[Relative atomic mass:

H = 1 ; Cl = 35.5 ]

a)

36.5

b)

35.5

c)

34.5

d)

37.5

7.

Calculate the relative formula mass of

calcium chloride, CaCl2


[Relative atomic mass:

Ca = 40, Cl = 35.5]

a)

130

b)

40

c)

71

d)

111

8.

Calculate the relative formula mass of

magnesium hydroxide, Mg(OH)2


[Relative atomic mass:

Mg = 24, H = 1, O = 16]

a)

50

b)

41

c)

58

d)

25

9.

Calculate the relative formula mass of

water, H2O


[Relative atomic mass:

H = 1, O = 16]

a)

16

b)

18

c)

17

d)

20

10.

Calculate the relative formula mass of

carbon dioxide CO2


[Relative atomic mass:

C = 12, O = 16]

a)

32

b)

41

c)

28

d)

44

11.

Calculate the relative formula mass of

sulphuric acid H2SO4


[Relative atomic mass:

H = 1, S = 32, O = 16]

a)

96

b)

98

c)

100

d)

92

12.

Calculate the relative formula mass of

sodium chloride, NaCl


[Relative atomic mass:

Ca = 40, Cl = 35.5]

a)

58.5

b)

60

c)

59.5

d)

61

13.

Calculate the relative formula mass of

iron chloride, FeCl2


[Relative atomic mass:

Fe = 56, Cl = 35.5]

a)

91.5

b)

127

c)

97

d)

121.5

14.

Calculate the relative formula mass of

sulphur dioxide, SO2


[Relative atomic mass:

S = 32, O = 16]

a)

48

b)

62

c)

64

d)

50

15.

Calculate the relative formula mass of

iron hydroxide, Fe(OH)2


[Relative atomic mass:

Fe = 56, O = 16, H = 1]

a)

74

b)

73

c)

96

d)

90