N2H. (1) + O2 (g) → N2 (g) + 2H¿O (1) AH = ? 2 NH3 + 3 N20 → 4 N2 + 3 H2O N20 + 3 H2 → N2H« + H2O 2 NH3 + % O2 → N2H4 + H20 Ha + ½ Oz → H;O AH = -1010 kJ AH = -317 kJ AH = -143 kJ AH = -286 kJ a. 622.7 kJ b. -1170.3 kJ c. 1170.3 kJ d. -622.7 kJ

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