Use the following reaction for the decomposition of magnetite (a mineral) to answer the following
questions.
MgCO3(s) → MgO(s) + CO2(g) ΔHrxn = 117.3 kJ
1. Determine the ΔH reaction for the reverse reaction?
2. Determine the ΔH when 35.5 g of CO2 reacts with excess magnesium oxide?