A particular natural gas has the following mass percent compostion: 81.29% methane, 8.18% ethane, 4.18% propane, 2.12% butanes, 1.06% pentanes, 0.61% hexanes, 0.61% heptanes, and 1.95% of noncombustible N2. How many kilograms of CO2 are produced by the complete combustion of 1.00kg of this natural gas?