Ethanol-C2H6O-is-most-often-blended-with-gasoline-usually-as-a-10-per-cent

Ethanol, C₂H₆O, is most often blended with gasoline – usually as a 10 per cent mix – to create a fuel called gasohol. Ethanol is a renewable resource and ethanol-blended fuels, like gasohol, appear to burn more efficiently in combustion engines. The heat of combustion of ethanol is 326.7 kcal/mol.

The heat of combustion of octane, C₈H₁₈, is 1.308×10³ kcal/mol. How much energy is released during the complete combustion of379 grams of octane ?

 kcal

Assuming the same efficiency, would 379 grams of ethanol provide more, less, or the same amount of energy as 379 grams ofoctane? _________morelessthe same amount

 

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