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The solution to Enthalpy change

Consider the following reaction:
2Mg + 02 --> 2MgO Delta H = -1204kJ

Calculate the amount of heat transferred when 2.2g of Mg reacts at constant pressure.

How many grams of MgO are produced during an enthalpy change of -94.0kJ ?

How many kilojoules of heat are absorbed when 7.80g of MgO is decomposed into Mg and O2 at constant pressure?

Solution Summary

Change of enthalpy of the reaction is investigated.