Question

1×10²² molecules of CuSO4.5H2O was added to wster amd 100g solution was obtained % weight of CuSO4.5H2O in the solution is (atomin weight of Cu=63.5)​

Answer 1

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.

Answer 2

Answer:

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