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  3. A mixture of CuSO4. 5H2O and MgSO4. 7H2O was heated until all the water drive-off

. A mixture of CuSO4. 5H2O and MgSO4. 7H2O was heated until all the water drive-off

A mixture of CuSO4. 5H2O and MgSO4. 7H2O was heated until all the water drive-off. If 5.0 g of mixture gave 3 g of anhydrous salts, what was the percentage by mass of CuSO4, 5H2O in the original mixture?

A. 74.4

B. 34.5

C. 42.5

D. 61.2

Best Answer

Correct Answer is: A. 74.4

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