# What is the percent by mass of water in CuSO_4*5H_2O?

Apr 3, 2017

#### Answer:

%"water"="Mass of water"/"Mass of copper sulfate pentahydrate"~=36%

#### Explanation:

%"water"=(5xx18.01*g*mol^-1)/(249.68*g*mol^-1)xx100%~=36%

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