Answer Happy

18.19) Given the following set of reactions, use Hess's Law to calculate the enthalpy of the reaction. N2​H4​+H2​→2NH3​ N2​+3H2​→2NH3​N2​H4​+O2​→N2​+2H2​O2H2​+O2​→2H2​O​ΔH∘=?ΔH∘=−92.38 kJ/molΔH∘=−622.09 kJ/molΔH∘=−483.6 kJ/mol​