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Question

How much copper in grams can be obtained from 100g of copper sulphate (CuSO4) ?

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Solution

Atomic mass of Cu=63.5g
Now
Molar mass of CuSO4=159.5g
1 mole of CuSO4 contains 1 mole of copper, i.e.,
159.5g of CuSO4 contains 63.5g of copper
Therefore,
100g of CuSO4 will contain of copper =63.5×100159.5=39.81g

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