   Chapter 19.9, Problem 1.2ACP

Chapter
Section
Textbook Problem

Use the energy produced by the combustion of gasoline (46 MJ/kg) to calculate the energy contained in 15 gallons of gasoline. (Assume the density of gasoline is 0.70 kg/L.)

Interpretation Introduction

Interpretation:

The energy contained in 15gallons of gasoline has to be determined if the energy produced by the combustion of gasoline is 46MJ/kg

Concept introduction:

Energy conversions:

• 1gallon=4qt
• 1kg=1.057qt
• 1MJ=kJ

Density=massvolume

Explanation

Given data:

Densityofgasoline=0.70kg/LEneregyproducedbythecombustionofgasoline=46MJ/kgAmountofgasoline=15gallons

Useful data:

1gallon=4qt1kg=1.057qt

We have to calculate the energy contained in 15gallons of gasoline.

First we can convert gallons to quarts.

1gallon=4qt

Therefore,

=15gallons×4qt1gallon=60qt

Densityofgasoline=0.70kg/L

Density can be converted from kg/Ltokg/qt

1kg=1

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