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If the density of gasoline is .66 g/mL, how many kilocalories of energy are obtained from...

If the density of gasoline is .66 g/mL, how many kilocalories of energy are obtained from 2.2 gal of gasoline ?

Express your answer in 2 significant figures.

When 1.0 g of gasoline burns, 11500 kcal of energy are given off.
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