Q.

The weight of 1×1022 molecules of CuSO4⋅5H2O is approximately x grams . The value of x is

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answer is 4.

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Detailed Solution

Weight of 6.023×1023 (Avogadro's number) =Mw of CuSO4⋅5H2O=249g=1mol of CuSO4⋅5H2O Weight of 1×1022 molecules of CuSO4⋅5H2O=249×1×10226.023×1023=4.14g
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