Given that a chlorine-oxygen bond in ClO2(g) has an enthalpy of 243 kJ/molkJ/mol , an oxygen-oxygen bond has an enthalpy of 498 kJ/molkJ/mol , and the standard enthalpy of formation of ClO2(g) is? ΔH∘f=102.5kJ/molΔHf∘=102.5kJ/mol , use Hess's law to calculate the value for the enthalpy of formation per mole of ClO(g).