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Discovery and Occurence of Hydrogen

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Question

Calculate the percentage of water in $F e S O_{4} .7 H_{2} O$

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Solution

Molecular Wt of $F e S O_{4} .7 H_{2} O$ = 278

Wt of Water in the Molecule = 126

So % of water = $\frac{126}{278} \times 100$ $= 45.3 %$

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