Find the formula of ammonium sulphate. [3 MARKS]
Each point: 1 Mark 1. Charge on ammonium(NH4+) is +1
2. Charge on sulphate(SO42−) is -2
3. By cross over charges to balance charges
(NH4)2SO4.
Write the chemical formula of the sulphate of Aluminium, Ammonium and Zinc.