Consider the following chemical equation. aZn+bHNO3→cZn(NO3)2+dH2O+eN2O.On balancing

Balance the chemical equations: Zn + HNO_3 to Zn(NO_3)_2 + NO_2 + H_2O

Balance the chemical equations: Sn + HNO_3 to Sn(NO_3)_2 + H_2O + NH_4NO_3

Balance the following chemical equation H_(2)O_(2)+O_(3) to H_(2)O+O_(2) Indicating the changes in oxidation number of oxygen, find the equivalent weight of H_(2)O_(2) for this reaction