what-is-the-standard-enthalpy-change-chemistry-homework-help
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Given the standard enthalpy changes for the following two reactions:
(1)N2(g) + O2(g)2NO(g)…… ΔH° = 181.8 kJ
(2)N2(g) + 2O2(g)N2O4(g)……ΔH° = 9.2 kJ
what is the standard enthalpy change for the reaction:
(3)2NO(g) + O2(g)N2O4(g)……ΔH° = ?
kJ

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