Question

How much copper can be obtained from 100 g of copper sulphate (CuSO₄)?

Answer 1

Molar mass of CuSO₄ = 63.6 + 32 + 64 = 159.6 g

159.6 g CuSO₄ gives 63.6 g copper

100 g CuSO₄ will give = {63.6 x 100}/{159.6} g copper = 39.85 g copper