Chemistry 9th Edition

Published by Cengage Learning
ISBN 10: 1133611095
ISBN 13: 978-1-13361-109-7

Chapter 10 - Liquids and Solids - Questions - Page 499: 23

Answer

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The ethanol used in alcohol rubs is used to evaporate the heat from the skin's surface; the skin's heat energy is transferred to the ethanol molecules, causing them to get excited and reach their gaseous state. Ethanol has a low vaporization point which makes this method perfect for rapid cooling.
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