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QUESTION
Q51) The weight of 1×1022 molecules of CuSO4.5H2O is ... [ IIT 1991]




SOLUTION

Molecular weight of CuSO4.5H2O=249.5g
Thus wt of 6.02 ×1023=249.5 g
∴ wt of 1022=4.15 g
Answer: (c)