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From the enthalpies of reaction
2C(s) + O2(g) → 2CO(g) ΔH = -221.0 kJ
2C(s) + O2(g) + 4H2(g) → 2CH3OH(g) ΔH = -402.4kJ
calculate ΔH for the reaction:
CO(g) + 2H2 → CH3OH(g)
Express your answer with the appropriate units.
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