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

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Xnyb

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Description

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 octaneC8H18, 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

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Explanation & Answer

a)Considering that the molecular weight of octane (C8H18) is:Molecular weight = 8*12+18*1=114 g/moland that the energy released from the combustion of 1 mol of octane is 1308 kcal, we c...

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