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A round plate having a diameter of 30.0 cm is being silver plated on one side, by electrolysis of silver nitrate, where the plate is the cathode. It is desired to have a silver coating having a thickness of 3.50 microns (1 micron=10^-6 m). How many minutes do we have to carry out the electrolysis using a current of 2.80 Amp? The density of silver= 10.50 g/cm^3 and the atomic weight of silver= 107.9

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