A website promoting the use of alternative energy vehicles and hybrid technologi

Question

A website promoting the use of alternative energy vehicles and hybrid technologies claims that, "A typical dioxide." obile in the UŠA uses about 500 gallons of gasoline every year, producing about 5 tons of carbon To determine the truth of this statement, calculate how many tons of carbon dioxide are produced when 500.0 gallons of gasoline are subjected to complete combustion. Assume that the primary ingredient in gasoline is octane, C8H18(), which has a density of 0.703 g/mL. Number ].ons co, 2 Give Up & View Solution Check Answer 0 Next E xit 9 Hint

Explanation / Answer

500 gal = 500*3.785 = 1892.5 liter of gasoline

assume

gasoline = cotane

1892.5 L --> 1892.5*10^3 mL * 0.703 g/mL = 1330427.5 g of octane

mol of octane = mass/MW = 1330427.5/114.23

mol of octane = 11646.918

1 mol of octane = 8 mol of CO2 since ratio is 1:8

11646.918 mol of octane = 11646.918*8 = 93175.344 mol of CO2

mass of CO2 = mol*Mw = 93175.344*44 = 4099715.136 g of CO2

mass of CO2 in kg = 4099715.136 / 1000 = 4099.71 kg of CO2

change to ton

ton of CO2 = 4099.71/1000 = 4.099 tons of CO2

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