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se Hess's law to calculate ΔG°rxn using the following information.     NO(g) + O(g) → NO2(g)   ...

se Hess's law to calculate ΔG°rxn using the following information.
    NO(g) + O(g) → NO2(g)    ΔG°rxn = ?

    2 O3(g) → 3 O2(g)    ΔG°rxn = +489.6 kJ
    O2(g) → 2 O(g)    ΔG°rxn = +463.4 kJ
    NO(g) + O3(g) → NO2(g) + O2(g)    ΔG°rxn = -199.5 kJ

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