3. Calculate the thermal effect of the reduction reaction of iron oxide (II) with hydrogen, based on the following thermochemical equations:
FeO(k) CO(g) = Fe(k) CO2(g); ΔН = - 13.18 kJ;
CO(g) ½O2 = CO2(g); ΔН = - 283.0 kJ;
H2(g) ½O2(g) = H2O(g); ΔН = - 241.83 kJ

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