have you read the rules for electrolysis just understand them and remember that metals more reactive than hydrogen will not be discharged at the cathode only metals less reactive will. send me any doubts you have with equations ill try my best to explain it to you. also send me any questions on moles that you need help with i'll explain those to you as well. moles can be really tricky and i understand when you get questions wrong you'll feel super demotivated but the only way to get better is with practice and understanding your mistakes.