The enthalpy of change for the reaction S (s) + O2 (g) → SO2 (g) is -296.0 kJ/mol. The enthalpy of change for the reaction 2SO2 (g) + O2(g) → 2SO3 (g) is -198.2 kJ/mol. What is the enthalpy of change for the reaction S (s) + 3/2 O2 (g) → SO3 (g)?

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