34. Solving a chemistry problem
4. Calculate the thermal effect of the reaction CaCO3 (t) = CaO (t) CO2 (g), if the heats of formation of the substances participating in the reaction are known (kJ / mol): ΔH ° f (CaO (T)) \u003d -635, 0; ΔH°f (CO2(g)) = -393.0; ΔH°f (CaCO3(t)) = -1207.1.
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