A major component of gasoline is octane . When octane is burned in air, it chemically reacts with oxygen gas to produce carbon dioxide and water . What mass of carbon dioxide is produced by the reaction of of oxygen gas? Be sure your answer has the correct number of significant digits.

The mass of carbon dioxide produced will be 732g

Explanation:

To find the mass of carbon dioxide produced, first of all write the balanced equation for the complete combustion of octane. Note that octane is the 8th member of alkane series I.e C8H18. Thus:

2C8H18 + 25O2 ==> 18CO2 + 9H2O

Then calculate the mass of 18CO2 taking molar mass of carbon to be 12 and that of oxygen to be 16. Thus

18×(12 +[16×2])

=18×(12+32)

= 732g

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