Question

The percentage composition of water in CaSO4.2H2O is

Answer 1

Answer: 20.93%

Explanation:

Answer 2

The percent composition of water in the given sample is 20.93 %

Explanation:

To calculate the percentage composition of chlorine in sample, we use the equation:

$\%\text{ composition of water}=\frac{\text{Mass of water}}{\text{Mass of water}}\times 100$

Mass of compound, $CaSO_4.2H_2O=[40+32+(4\times 16)+2((2\times 1)+16)]=172g/mol</p><p>Mass of water = [tex][2((2\times 1)+16)]=36g/mol$

Putting values in above equation, we get:

$\%\text{ composition of water}=\frac{36g/mol}{172g/mol}\times 100=20.93\%$

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