Calculate H for the reaction: 2NO(g) + O2(g) —> 2NO2(g) given the following data: Reaction 1 [1/2N2(g) + 1/2O2(g) —> NO(g) H= 90.4 kJ] Reaction 2 [1/2N2(g) + O2(g) —> NO2(g) H=33.9 kJ]
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