Use the References to access important values if needed for this questionEthanol, C2H0, is most often blended with gasoline - usually as a 10 percent mix - to create a fuelcalled gasohol. Ethanol is a renewable resource and ethanol-blended fuels, like gasohol, appear to bummore efficiently in internal combustion engines. The combustion enthalpy of ethanol is 1366.9 kJ/molThe combustion enthalpy of 2-methylpentane, C6H14 is 4.157x103 kJ/mol. Calculate the energyreleased during the complete combustion of 382 g 2-methylpentanekJAssuming the same efficiency, would 382 g ethanol provide more, less, or the same quantity of energy as382 g 2-methylpentane? |Submit AnswerRetry Entire Group8 more group attempts remaining

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Asked Oct 23, 2019
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Use the References to access important values if needed for this question
Ethanol, C2H0, is most often blended with gasoline - usually as a 10 percent mix - to create a fuel
called gasohol. Ethanol is a renewable resource and ethanol-blended fuels, like gasohol, appear to bum
more efficiently in internal combustion engines. The combustion enthalpy of ethanol is 1366.9 kJ/mol
The combustion enthalpy of 2-methylpentane, C6H14 is 4.157x103 kJ/mol. Calculate the energy
released during the complete combustion of 382 g 2-methylpentane
kJ
Assuming the same efficiency, would 382 g ethanol provide more, less, or the same quantity of energy as
382 g 2-methylpentane? |
Submit Answer
Retry Entire Group
8 more group attempts remaining
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Use the References to access important values if needed for this question Ethanol, C2H0, is most often blended with gasoline - usually as a 10 percent mix - to create a fuel called gasohol. Ethanol is a renewable resource and ethanol-blended fuels, like gasohol, appear to bum more efficiently in internal combustion engines. The combustion enthalpy of ethanol is 1366.9 kJ/mol The combustion enthalpy of 2-methylpentane, C6H14 is 4.157x103 kJ/mol. Calculate the energy released during the complete combustion of 382 g 2-methylpentane kJ Assuming the same efficiency, would 382 g ethanol provide more, less, or the same quantity of energy as 382 g 2-methylpentane? | Submit Answer Retry Entire Group 8 more group attempts remaining

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Expert Answer

Step 1

Combustion reactions are those type of chemical reactions wherein hydrocarbons are burnt in the presence of air or oxygen in order to produce carbon dioxide and water.

Step 2

The heat of combustion can be defined as the amount of heat which is per unit volume or per unit mass of the given substance when it is completely burnt.

Step 3

The heat which is released by combustion of 382 g of C7H...

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-4.157x10 kJ/mol mol C,H16 mol C-H16 382 g C,H16 100.198 g C,H16 =-15848.360 kJ =15.84x103kJ

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