A compact passenger car that runs on natural gas emits 0.28kgCO2 per mile driven. Suppose the vehicle is fueled with synthetic natural gas that is derived from coal. Forty percent of the original energy in the coal is used to convert the coal to the synthetic gas. (a) What is the mass of coal consumed, and (b) the new total CO2 emissions per mile? Consider only the effect of using coal instead of gas as the original energy source, and the conversion loss; ignore all other factors. Also, for simplicity, treat natural gas as pure methane and coal as pure carbon. none of these 0.1186(+/)1%;0.388(+/)2% 0.1226(+/)1%;0.358(+/)1% 0.1086(+/)2%;0.398(+/)2%