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  4. sample of copper sulphate pentahydrate, CuSO4.5H2O contains 3.782 g of Cu. How many grams of oxygen are in this sample ?

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Q. sample of copper sulphate pentahydrate, $CuSO_{4}.5H_{2}O$ contains $3.782\, g$ of $Cu$. How many grams of oxygen are in this sample ?

Coordination Compounds

Solution:

Sample $CuSO_{4}. 5H_{2}O$
$[Cu (H_{2}O)_{5}S0_{4}]$
$63$ g of $Cu = 144$ g (Oxygen)
$3.782 \,g\,Cu = ?$
$\frac{1144 \times 3.782}{63}= 8.570 g $(Oxygen)