Natural gas is primarily composed of methane (CH4), while coal can be modeled as eicosane (C20H42). Methane has a heat of combustion of 55.6 MJ/kg, and its molecular weight is 16 g/mol. Correspondingly, eicosane has a heat of combustion of 47.2 MJ/kg, and its molecular weight is 282 g/mol. If you generated the same total amount of heat with each fuel, which would produce more CO2 emissions? By how much?