Question

if the question is copper sulphate crystals contain 25.45% Copper and 36.07% of water then how can we say that it satisfy the law of constant composition​

Answer 1

Explanation:

According to thy given values 

100 gram or crystalline cuSO4 sulphate needs 25.45 gram of Cu 

hence 40 gram of crystal copper sulphate will need 

25.45x40/ 100 = 10.18 gram of Cu

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