Half reaction N_2 H_4 (aq) → N_2 (g)Balancing atoms except O and H N_2 H_4 (aq) → N_2 (g)Balancing charge N_2 H_4 (aq)→N_2 (g)+4H^+ (aq)Balanced half reaction for oxidation of hydrazine to gaseous nitrogen is N_2 H_4 (aq)→N_2 (g)+4 H^+ (aq)+ 4e^-
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so no germs get in the cut an cause an infection