Chemistry: Molecular Approach (4th Edition)

Published by Pearson
ISBN 10: 0134112830
ISBN 13: 978-0-13411-283-1

Chapter 1 - Exercises - Page 40: 114


\[\underline{ 7.27\,\ US\ dollars\text{ per gallon }}\]

Work Step by Step

Price of \[1\text{ liter}\] of gasoline is \[1.42\text{ euro}\]. Convert \[\text{euro}\] to \[\text{US}\$\] as follows: \[\begin{align} & 1\text{ euro}=\ \text{1}\text{.35 US dollar} \\ & 1.42\text{ euro}=\left( 1.42 \right)\left( \text{1}\text{.35 US dollar} \right) \\ & =\,\ 1.92\,\text{US dollar} \end{align}\] Convert \[\text{liter}\] into \[\text{gallon}\] as follows: \[\frac{1}{3.785}\text{ gallon}\] costs \[1.92\,\text{US dollar}\]. So, \[\begin{align} & \text{1 gallon}=\left( 1.92\,\text{US dollar} \right)\left( 3.785 \right) \\ & =7.27\text{ US dollar per gallon} \end{align}\] The price of \[1\text{ gallon}\] gasoline in U.S. dollars is \[7.27\,\underline{\text{US dollars per gallon }}\]..
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