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Silver is monovalent and has atomic mass...

Silver is monovalent and has atomic mass of 108. Copper is divalent and has an atomic mass of 63.6. The same electric current is passed for the same length of time through a silver couloment and a copper coulometer. If 27.0 g of silver is deposited, then the corresponding amount of copper deposited is

A

63.60 g

B

31.80 g

C

15.90 g

D

7.95 g

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The correct Answer is:
D
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