Question
Asked Nov 30, 2019
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Gasoline yields 4.8 x 107 joules per kg when burned. The density of gasoline is approximately the
same as that of water, and 1 gal = 3.8 L. How much energy does your car use on a trip of 100 mi if
you get 25 mi per gallon?
A) 7.3x 108 J
B) 3.7 x 108 J
C) 4.6 x 108 J
D) 6.2x 108 J
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Gasoline yields 4.8 x 107 joules per kg when burned. The density of gasoline is approximately the same as that of water, and 1 gal = 3.8 L. How much energy does your car use on a trip of 100 mi if you get 25 mi per gallon? A) 7.3x 108 J B) 3.7 x 108 J C) 4.6 x 108 J D) 6.2x 108 J

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Expert Answer

Step 1

From the given information, the car use 4 gallons of gasoline for 100 miles trip.

Step 2

Given, 1 gallon = 3.8L. Hence the amount of gasoline in kilograms can be found as

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4x3.8 L of gasoline 15.2LxPeasoline =15.2Lx1(kg/L) 15.2kggasoline

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Step 3

Therefore, the amount of g...

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15.2kg x4.8x10 J 72.96x10 J 7.3x108 J

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