C. Use Hess's law and the following equations to calculate Triangle H for the reaction SO2(g) + NO2(g) → SO3(g) + NO(g). (Show your work.)

•SO3(g) → SO(g) + 1/2O2(g)
Triangle H= -98.4 kJ/mol

•N2(g) + O2(g) → 2NO(g)
Triangle H= 180.6 kJ/mol

•NO2(g) →1/2N2(g) + O2(g)
Triangle H= -33.1 kJ/mol