(Ifyoudon’tlikehavingoneandahalfoxygenmolecules,youcanthinkoftwohydrocarbonsplusthree oxygensmakingtwocarbondioxidesandtwowaters;itisthesamething,really.) In burning, each carbon atom, C, in gasoline eliminates two hydrogens and replaces them with two oxygens each carbon atom weighs 12 atomic mass units each hydrogen weighs 1 each oxygen weighs 16; So, CH2 starts out weighing 14 (12 from carbon and 2 from hydrogen), and CO2 ends up weighing 44 (12 from carbon and 32 from oxygen)—the weight has more than tripled. Rounding that off a little, thetotalweightofCO2putoutbyatypicalU.S.driveristhreetimeslargerthanthe weightofgasolineburned. To get the number of pounds of CO2 per year from a typical car, then, multiply your answer from the previous question by 3. A) 216,000 pounds / year B) 1,080 pounds / year C) 108,000 pounds / year D) 10,800 pounds / year 4. Total Pounds (or Tons) of CO 2 Produced by U.S. Drivers per Year Calculation: Imagine for a moment that the CO 2 behaved like horse ploppies, making a pile in the road, rather than wafting away in the atmosphere. How much would we have? Here are your necessary facts: There are roughly 140,000,000 cars in the country Each car averages 12,000 miles per year Each car is producing @ 1 pound of CO 2 per car per mile How many pounds of CO 2 are produced each year by U.S. drivers? To get this number, simply multiply the 3 variables above for this answer. This is a big number one that cheaper calculators won't be able to handle. In this case, you'll want to come up with the number of tons instead of the number of pounds of CO 2 . (2000 lbs = 1 ton). The formulas will look like this; Points Earned: 2.0/2.0 Correct Answer(s): D
11/8/2016 Exercise #6: Fossil Fuels (& Driving Hazards) 3/4 Total Pounds of CO 2 produced in a year by U.S. drivers: # of cars X # of miles per car X pounds of CO 2 per mile Total Tons of CO 2 produced in a year by U.S. drivers:(# of cars / 2000) X # of miles per car X pounds of CO 2 per mile
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- Fall '08
- CO2, Geosc10, Geosc010, Exercise 6, pounds