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The weight of 1xx10^(22) molecules of Cu...

The weight of `1xx10^(22)` molecules of `CuSO_(4).5H_(2)O` is

A

41.59 g

B

415.9 g

C

4.159 g

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
C
[` :' ` Molecular weight of `CuSO_(4).5H_(2)O = 63.5 + 32 + 64 + 90 = 249.5`]
`6xx 10^(23)` molecules has weight = 249.5 gm
`1 xx 1-^(22)` molecules has weight `= (249.5 xx 1 xx 10^(22))/(6 xx 10^(23))`
`= 41.58 xx 10^(-1) = 4.158`
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