Purification of nickel can be achieved by electrorefining nickel from an impure nickel anode onto a pure nickel cathode in an electrolytic cell. How many hours will it take to plate 19.0 kg of nickel onto the cathode if the current passed through the cell is held constant at 34.5 A

Step-by-step explanation:

Let be weight of plated nickel and be grams per mole of nickel

Also take Faraday's constant ,,

Nickel has an atomic weight, of per mole

Therefore, time to plate is given by the formula

look at the picture.

y-intercept for the function on a picture is 4 → point (0, 4).

y-intercept for the function

is for x = 0. substitute:

y-intercept is 8 → point (0, 8).

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