14. Calculate the enthalpy change of the following reaction between nitrogen gas and oxygen gas, given thermochemical equations (1), (2), and (3).
2N2(g) + 5O2(g) 2N2O5(g)
(1) 2H2(g) + O2(g) 2H2O(l) H0 = -572 kJ
(2) N2O5(g) + H2O(l) 2HNO3(l) H0 = -77 kJ
(3) N2(g) + O2(g) + H2(g) HNO3(l) H0 = -174 kJ

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