(b) Calculate the molecular mass of : [At. wts. Mg = 24, C = 12, O = 16,
N = 14, H = 1, Cl = 35-5, Cu = 63.5, Fe = 56, S = 32]
(1) MgCO3
(ii) Ammonium sulphate
(iii) (NH2)2 FeSO4-6H2O
(iv) CuSO4.5H2O
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Explanation:
1) 24×1+12×1+16×3
24+12+48
84u
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