Given:

Mass of Copper Sulphate = 100g

Atomic Mass of Copper = 63.5g

Atomic Mass of Sulphur = 32g

Atomic Mass of Oxygen = 16g

Molecular Mass of CuSO₄ = 63.5 + 32 + [4×16]

= 159.5g

63.5g of Copper [Cu] → 159.5g of Copper Sulphate

X g of Copper [Cu] → 100 g of Copper Sulphate

X = [100×63.5]/159.5

= 6350/159.5

= 39.812

≈39.81g

Therefore 39.81g of copper can be obtained from 100g of copper sulphate.