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How much fuel is left over after the combustion process?

Retry Correct Incorrect Not all of the fuel is completely consumed by the combustion process. Afterward, a small amount of fuel will still be present, and some of it reacts to form oxygenates, including formaldehyde and acetaldehyde.

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Maja Hitij/Getty Images

Maja Hitij/Getty Images

How much fuel is left over after the combustion process?

• A small amount
• None
• Most of it
• All of it