Copper sulphate crystals contain 25.45% Cu and 36.07% H_2O. If the law of constant proportions is true, calculate the weight of Cu required to obtain 40g of crystalline copper sulphate.

Copper sulphate crystals contain 25.45% Cu and 36.07% H_2O. If the law

1.	Copper sulphate crystals contain 25.45% Cu and 36.07% H_2O. If the law of constant proportions is true, calculate the weight of Cu required to obtain 40g of crystalline copper sulphate.
Answer» ANSWER :10.18 G