Chemistry

Assuming that gasoline is pure octane (d = 0.703 g/mL), how many metric tons of CO2 are released in a year by an SUV that gets 19 mpg and is driven 17500. miles?

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asked by Dez
  1. 2C8H18 + 25O2 ==> 16CO2 + 18H2O

    17,500 miles/19.2 mpg = ? gallons.
    ? gallons x 3.785 liters/gallon.
    ?liters x 1000 = ?mL
    ?mL x 0.703 g/mL = ? grams
    grams octane/molar mass octane = mols octane.
    Using the coefficients in the balanced equation, convert mols Octant to mols CO2 produced.
    ?mols CO2 x molar mass CO2 = grams CO2
    ?grams x xxx = metric tons CO2.

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  2. 8.923 x10 ^-6 MT

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  3. There are 256 x 106 cars in the US. If each car is driven 12,000 miles/year, and averages 20 miles/gallon (octane, C8H18, density = 0.780 g/mL), how many tons of CO2 are produced per year?

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