A mixture of CuSO_(4).5H_(2)O and MgSO_(4).7H_(2)O was heated until all the water was driven off If 5.0g if mixture gave 3g of anhydrous salts, what was the percentage by mass of CuSO_(4).5H_(2)O in the original mixture :

A mixture of CuSO_(4).5H_(2)O and MgSO_(4).7H_(2)O was heated until al

1.	A mixture of CuSO_(4).5H_(2)O and MgSO_(4).7H_(2)O was heated until all the water was driven off If 5.0g if mixture gave 3g of anhydrous salts, what was the percentage by mass of CuSO_(4).5H_(2)O in the original mixture :
Answer» Solution :LET the MIXTURE contain `x gCuSO_(4). 5H_(2)O`. `IMPLIES (x)/(249)xx159+(5-x)/(246)xx120=3impliesx=3.72` implies Mass percentage of `CuSO_(4).5H_(2)O = 74.4`