Chemistry
Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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Question
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How much energy in kJ is released in burning 2.5 mL of gasoline (assuming that all of it is octane with a density of 0.692 g/mL and a molar mass of 114.23 g/mol)

 

The equation for the combustion reaction is

C8H18(ℓ) + 25/2O2(g) → 8CO2(g) + 9H2O(ℓ)

 

ΔHf° kJ/mol

C8H18(ℓ): -250.3

O2(g): 0

CO2(g): -393.5

H2O(ℓ): -285.8

 
Round your answer to 2 decimal places.
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