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July 6, 2015

Homework Help: AP Chem

Posted by Kai on Sunday, November 14, 2010 at 6:42pm.

The heat of combustion of octane (C8H18) is 47.8 kJ/g and one gallon of C8H18 has a mass of 2620 g. If a car using octane is driven 10,000 miles in one year and gets 25 miles per gallon of octane, what is the total energy
consumption?
1. 5.01 107 kJ
2. 8.45 102 kJ
3. 34 107 kJ
4. 7.80 103 kJ
5. −13 103 kJ

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