Solution: Calculate ΔH for the reaction N2H4 (l) + O2 (g) → N2 (g) + 2H2O (l)given the following data2 NH3 (g) + 3N2O (g) → 4N2(g) + 3H2O (l)      ΔH = -1010 kJN2O (g) + 3 H2 (g) → N2H4 (l) + H2O (l)          

Calculate ΔH for the reaction 

N₂H₄ (l) + O₂ (g) → N₂ (g) + 2H₂O (l)

given the following data

2 NH₃ (g) + 3N₂O (g) → 4N₂(g) + 3H₂O (l)      ΔH = -1010 kJ

N₂O (g) + 3 H₂ (g) → N₂H₄ (l) + H₂O (l)           ΔH = -317 kJ

2NH₃ (g) + 1/2 O₂ (g) → N₂H₄ (l) + H₂O (l)       ΔH = -143 kJ

H₂ (g) + 1/2 O₂ (g) → H₂O (l)                            ΔH  = -286 kJ