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Given

(a) N2(g) + O2(g) --> 2NO(g) ∆H = + 180. 7 kJ

(b) 2NO(g) +O2(g) --> 2NO2(g) ∆H = -113.1 kJ

(c) 2N20(g) --> 2N2(g) --> O2(g) ∆H = -163.2 kJ

Desired Reaction: N2O (g) + NO2(g) --> 3NO (g)

Can someone please tell me where to start? How do I apply Hess's Law? I know I have to work backwards. However, how do I do this in a systematic way?

Any help is appreciated

Thanks

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# Homework Help: Thermodynamics homework

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