The EPIC Energy Blog

Before answering this question it helps to first know how much a gallon of gasoline weighs.

Gasoline has a weight of just over 6 pounds per US gallon. A natural guess could then be that about 6 pounds of carbon dioxide (CO2) is produced from the combustion of a gallon of gasoline. However, to the surprise of many, that guess would actually be too low.

Gasoline is comprised primarily of carbon and hydrogen atoms linked together forming large carbon chain molecules. During the combustion process, the chemical bonds linking individual carbon atoms together are broken apart, releasing energy that is used to power the vehicle’s engine. When the bond between two carbon atoms is broken, each of those freed carbon atoms then bond naturally with other atoms in the atmosphere, typically oxygen atoms. From this chemical reaction we find the answer to our question.

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A single carbon atom has a molecular weight…

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