1. Write the chemical formula for the following compounds:
(i) Sodium Carbonate
(ii) Magnesium Chloride
(iii) Ferrous(II) Oxide
(iv) Ammonium Sulphite

(v) Aluminium Sulphide
(vi) Hydrogen Sulphate

Magnesium chloride = MgCl2
Sodium Carbonate = Na2CO3
Ammonium Sulphite = (NH4)2SO3
Ferrous(II) Oxide = FeO
Aluminium Sulphide = Al2S3
Hydrogen Sulphate = HSO4-

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