How many pounds of carbon dioxide are produced from the combustion of 2.50 gallons of gas? Mass of gas is 6.3 pounds. O2 consumed is 22.1 pounds.

The balanced equation is

C_{8}H_{18 }+12.5 O_{2} = 8CO_{2}+9 H_{2}O

http://www.newton.dep.anl.gov/askasci/chem03/chem03768.htm

C8H18 = 12*8+18*1 =114

12.5O2 =400

Mass of O2 = (6.3/114)*400 =22.1

Mass of CO2 = (6.3/114)* (8*44) = 6.3*352/114=19.45

Since 2.5 gallons are involves mass of carbon dioxide = 2.5*19.45 =48.63

Answer : 48.63 lbs

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