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能源算式,单位转换,A 1600kg gasoline-powered vehicle require about 3.

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能源算式,单位转换,
A 1600kg gasoline-powered vehicle require about 3.5MJ of primary energy to travel 1km.
If the vehicle travels a total of 300,000km during its life,
what is the ratio of the mass of CO2 emitted to the mass of the vehicle?
(p.s.assumed that the gasoline is octane C8H18,find out its energy/heat of combustion
and the by-products of the combustion of methane is CO2 and H2O)
能源算式,单位转换,A 1600kg gasoline-powered vehicle require about 3.
total energy consumption: 3.5*300000=1050000MJ
1molC8H18=5517.6kJ=5.5MJ
amount of C8H18：1050000/5.5=190909mol
（C8H18(l)+25/2 O2(g)=8CO2(g)+9H2O(l) ）
amount of Co2:190909*8=1527272mol
ratio: amount of Co2/quality: 1527272/1600= 954.5mol/Kg
本科研究生都读的是Social science 有点忘了高中化学 应该差不多吧 就是这个思路
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