(a) (i) 32 g = 1 mole
12g = 1/(2x16) x 12
= 0.375 mole
(ii) 44 g = 1 mole
22 g = 1/44 x 22=1/2mole
(b) (i) Sodium bromide
(ii) Aluminium oxide
(iii) Zinc nitrate
(iv) Hydrogen chloride
(v) Sodium chloride
(vi) Calcium carbonate
(a) (i) 32 g = 1 mole
12g = 1/(2x16) x 12
= 0.375 mole
(ii) 44 g = 1 mole
22 g = 1/44 x 22=1/2mole
(b) (i) Sodium bromide
(ii) Aluminium oxide
(iii) Zinc nitrate
(iv) Hydrogen chloride
(v) Sodium chloride
(vi) Calcium carbonate