Physics for Scientists and Engineers: A Strategic Approach with Modern Physics (3rd Edition)

Published by Pearson
ISBN 10: 0321740904
ISBN 13: 978-0-32174-090-8

Chapter 17 - Work, Heat, and the First Law of Thermodynamics - Exercises and Problems: 15

Answer

The maximum mass of ethyl alcohol that could be boiled is 1.0 gram.

Work Step by Step

The heat energy $Q$ required to change the temperature of a substance is: $Q = m~c~\Delta T$ The heat energy $Q$ required to change the state of a substance is: $Q = m~L$ We can find the maximum mass of ethyl alcohol that could be boiled. $Q = m~c~\Delta T + m~L$ $m = \frac{Q}{c~\Delta T+L}$ $m = \frac{1000~J}{(2400~J/kg~C^{\circ})(78~^{\circ}C-20~^{\circ}C)+(8.50\times 10^5~J/kg)}$ $m = 0.0010~kg = 1.0~g$ The maximum mass of ethyl alcohol that could be boiled is 1.0 gram.
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.