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Use the standard reaction enthalpies given below to determine ΔH°rxn for the following reaction: 2 S(s)...

Use the standard reaction enthalpies given below to determine ΔH°rxn for the following reaction:

2 S(s) + 3 O2(g) → 2 SO3(g) ΔH°rxn = ?

Given: SO2(g) → S(s) + O2(g) ΔH°rxn = +296.8 kJ 2 SO2(g) + O2(g) → 2 SO3(g) ΔH°rxn = -197.8 kJ

Please explain in detail.

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