Given the Following Reactions N₂ (G)+ O₂ (G)→ 2NO (G)ΔH

Multiple Choice

Given the following reactions N₂ (g) + O₂ (g) → 2NO (g) ΔH = +180.7 kJ
2NO( g) + O₂ (g) → 2NO₂ (g) ΔH = -113.1 kJ
The enthalpy for the decomposition of nitrogen dioxide into molecular nitrogen and oxygen
2NO₂ (g) → N₂ (g) + 2O₂ (g)
Is ________ kJ.

A) 67.6
B) -67.6
C) 293.8
D) -293.8
E) 45.5