19. Which row gives the electrode products in the electrolysis of copper(II) sulfate using carbon electrodes? 20. A BC D Cathode copper copper hydrogen hydrogen Anode copper ions oxygen gas sulfate ions oxygen gas Which apparatus is used to plate a nickel object with silver? silver silver A power supply power supply -nickel object nickel- object silver nitrate solution -nickel nickel. object object B power supply D power supply silver silver nitrate solution -silver​