For the reaction N₂(g) + O₂(g) → 2NO(g), Δ H = 180.6 kJ/mol at 298 K. What is Δ U if the gas behaves ideally? (R = 8.314

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For the reaction N₂(g) + O₂(g) → 2NO(g), Δ H = 180.6 kJ/mol at 298 K. What is Δ U if the gas behaves ideally? (R = 8.314 J/mol·K)

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180.6 kJ/mol Correct 183.1 kJ/mol 178.1 kJ/mol 90.3 kJ/mol

Δ ng = 2 - 2 = 0, Δ H = Δ U + Δ ng RT. Since Δ ng = 0, Δ U = Δ H = 180.6 kJ/mol.

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