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The weight of 1 xx 10^(22) molecules of ...

The weight of `1 xx 10^(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
[`therefore` Molecular weight of `CuSO_(4).5H_(2)O = 63.5 + 32 + 64 + 90 = 249.5`]
`6 xx 10^(23)` molecules has weight `=(249.5 xx 1 xx 10^(22))/(6 xx 10^(23))`
`=41.58 xx 10^(-1) rArr 4.158 g`
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