A current of 5.83 A is passed through a Ni(NO3)2 Ni ( NO 3 ) 2 solution. How long, in hours, would this current have to

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A current of 5.83 A is passed through a Ni(NO3)2 Ni ( NO 3 ) 2
solution. How long, in hours, would this current have to be applied
to plate out 7.70 g 7.70 g of nickel?
A current of 5.59 A is passed through a Sn(NO3)2 Sn ( NO 3 ) 2
solution for 1.60 h 1.60 h . How much tin is plated out of the
solution?
The voltage generated by the zinc concentration cell described
by the line notation Zn(s) ∣∣ Zn2+(aq,0.100 M) ‖‖ Zn2+(aq,? M) ∣∣
Zn(s) is 23.0 mV at 25 °C. Calculate the concentration of the
Zn2+(aq) ion at the cathode.