Problem: Determine the enthalpy of reaction for 4 NH3(g) + 7 O2(g) → 4 NO2(g) + 6 H2O(l) 1. −1397.6 kJ/mol rxn  2. +2034.4 kJ/mol rxn 3. −1899 kJ/mol rxn 4. −298.7 kJ/mol rxn 5. −1766 kJ/mol rxn

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Determine the enthalpy of reaction for

4 NH3(g) + 7 O2(g) → 4 NO2(g) + 6 H2O(l)

1. −1397.6 kJ/mol rxn 

2. +2034.4 kJ/mol rxn

3. −1899 kJ/mol rxn

4. −298.7 kJ/mol rxn

5. −1766 kJ/mol rxn

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