i am stuck on these last 4 homework problems PLEASE help me and please write steps so i can better understand! THANK YOU!

Use the References to access important values if needed for this question. ClO4+Cu+H2OCu(OH)2+ClO3 In the above redox reaction, use oxidation numbers to identify the element oxidized, the element reduced, the oxidizing agent and the reducing agent. name of the element oxidized: name of the element reduced: formula of the oxidizing formula of the reducing agent: agent: Use the References to access important values if needed for this question. NiO2+Mn+4H+Mn2++Ni2++2H2O In the above redox reaction, use oxidation numbers to identify the element oxidized, the element reduced, the oxidizing agent and the reducing agent. name of the element oxidized: name of the element reduced: formula of the oxidizing agent: formula of the reducing agent: Identify the species oxidized, the species reduced, the oxidizing agent and the reducing agent in the following electron transfer reaction. As the reaction proceeds, electrons are transferred from to Identify the species oxidized, the species reduced, the oxidizing agent and the reducing agent in the following electron transfer reaction. Cl2+Pb2Cl+Pb2+ species oxidized species reduced oxidizing agent reducing agent As the reaction proceeds, electrons are transferred from to