Question

The weight of 1 x 1022 molecules of MgSO4.7H2O is​

Answer 1

Answer:

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Explanation:

mgso⅘=^potash

Answer 2

Explanation:

Molar mass of CuSO4⋅5H2O=63.5+32+4×16+5×18=249.5 g/mol

Thus, 249.5 g of CuSO4⋅5H2O contains avogadro's number of molecules.

The weight of 1×1022 molecules of CuSO4⋅5H2O is 6.023×1023249.5×1022=4.14 g