Help chem problem due in 2 hours?

suppose that a galvanic cell were set up having the net cell reaction
Zn(s)+2Ag+(aq) +Zn2+(aq) +2Ag(s)
the Zn2+ and Ag+ concentrations are initially 0,74 M and each half cell contains 124mL of eletrolyte solution.
if the cell derives current at a constant rate of 0,10 A,what will the cell potential be at 15 hours?
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