M_CO 28[g/mol] Molar mass CO M_O2 32[g/mol] Molar mass O2 M_CO2 44[g/mol] Molar mass CO2 M_H2 2[g/mol] Molar mass H2 M_H2O 18[g/mol] Molar mass H2O M_N2 28[g/mol] Molar mass N2 dH_CO -26.42[kcal/mol] Standard enthalpy of formation CO dH_CO2 -94.061[kcal/mol] Standard enthalpy of formation CO2 dH_H2 0[kcal/mol] Standard enthalpy of formation H2 dH_H2O -57.80[kcal/mol] Standard enthalpy of formation H2O dH_N2 0[kcal/mol] Standard enthalpy of formation N2 dH_O2 0[kcal/mol] Standard enthalpy of formation O2