The weight of 1 x 1022 molecules of MgSO4.7H2O is
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Answer:
Molar mass of CuSO
4
⋅5H
2
O=63.5+32+4×16+5×18=249.5 g/mol
Thus, 249.5 g of CuSO
4
⋅5H
2
O contains avogadro's number of molecules.
The weight of 1×10
22
molecules of CuSO
4
⋅5H
2
O is
6.023×10
23
249.5
×10
22
=4.14 g.
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