For each of the reactions, identify other quantities that are equal to enthalpy of reaction, ΔH°rxn. 1.CH4(g)+2O2(g)⟶CO2(g)+2H2O(l) enthalpy of formation of CO2(g) enthalpy of combustion of CH4 enthalpy of atomization of CH4 4 × bond energy of C−H enthalpy of atom combination for CO2 2.CH4(g)⟶C(g)+4H(g) enthalpy of atom combination for CH4 enthalpy of atomization of CH4 enthalpy of combustion of CH4 enthalpy of formation of C(g) 4 × bond energy of C−H 3.C(graphite)+2H2(g)⟶CH4(g) enthalpy of atomization of H2 enthalpy of atom combination for CH4 4 × bond energy of C−H enthalpy of combustion of CH4 enthalpy of formation of CH4(g) 4.C(g)+4H(g)⟶CH4(g) enthalpy of combustion of C enthalpy of formation of CH4(g) enthalpy of atom combination for CH4 4 × bond energy of C−H enthalpy of atomization of CH4