Relative Formula Mass

Calculate the relative formula mass of

copper (ii) chloride, CuCl₂

[Relative atomic mass:

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

• 90

• 135

• 137

• 99.5

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 ]

• 150

• 315

• 342

• 331

Calculate the relative formula mass of

copper (i) sulphate, Cu₂SO₄.

[Relative atomic mass:

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

• 224

• 160

• 112

• 128

Calculate the relative formula mass of

copper (ii) sulphate, CuSO₄.

[Relative atomic mass:

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

• 100

• 112

• 200

• 160

Calculate the relative formula mass of

aluminium oxide, Al₂O₃

[Relative atomic mass:

O = 16 ; Al = 27 ]

• 70

• 102

• 43

• 113

Calculate the relative formula mass of

hydrochloric acid, HCl

[Relative atomic mass:

H = 1 ; Cl = 35.5 ]

• 36.5

• 35.5

• 34.5

• 37.5

Calculate the relative formula mass of

calcium chloride, CaCl₂

[Relative atomic mass:

Ca = 40, Cl = 35.5]

• 130

• 40

• 71

• 111

Calculate the relative formula mass of

magnesium hydroxide, Mg(OH)₂

[Relative atomic mass:

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

• 50

• 41

• 58

• 25

Calculate the relative formula mass of

water, H₂O

[Relative atomic mass:

H = 1, O = 16]

• 16

• 18

• 17

• 20

Calculate the relative formula mass of

carbon dioxide CO₂

[Relative atomic mass:

C = 12, O = 16]

• 32

• 41

• 28

• 44