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Topic: extra credit problem (Read 295 times)
ineedchemhelp
Labrat
Posts: 24
extra credit problem
«
on:
December 07, 2008, 08:02:07 PM »
hey guys,
i need some help with an extra credit problem. This information is not in my textbook so I dont know how to approach it at all. Please help.. its worth 5 grade points.. and I really need those points. Here is the question.
What would be the effect on the concentration of atmosphereic CO2 in year if 1 billion (1x10^9) cars each burned 1000 gal of gas during that year. ( note: there is a current concentration of atmospheric CO2. We want to figure out what the concentration would become after the billion cars ran for that year?
- assume that gasoline is octane (C8H18)
- assume that the earth is a smooth sphere with a radius of 4000.
- atmosphere pressure is 14.7 lbs/in2 , ( the weight of the atmosphere is 14.7 lbs on every square inch of the earth
- the area of a sphere = 4 * pie * (radius)^2
- 1 lb = 454 grams
- 1 gallon = 4 qts
- 1 qt= ~ 1.1L
- the density of octance is ~ 0.7 g/mL
- the current concentration of atmospheric CO2 is 400 ppm (parts per million)
- 1 ppm = 0.0001%
the question is based on greenhouse gas.
thanks for your help guys.
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Re: extra credit problem
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Reply #1 on:
December 07, 2008, 08:21:39 PM »
i can't help you too much because it is for a grade
i will tell you this, just follow your units! make them cancel and you will get there
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