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A certain current liberated 0.504 g of h...

A certain current liberated 0.504 g of hydrogen in 2 hours. How many gram of copper can be liberated by the same current flowing for the same time in `CuSO_(4)` solution ?

A

12.9 g

B

15.9 g

C

31.7 g

D

36.9 g

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The correct Answer is:
B
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