Chemistry and Chemical Reactivity (9th Edition)

Published by Cengage Learning
ISBN 10: 1133949649
ISBN 13: 978-1-13394-964-0

Chapter 10 Gases and Their Properties - Study Questions - Page 403d: 48


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Work Step by Step

Since density is directly proportional to the molecular weight and effusion rate is inversely proportional to the square root of the molecular weight: $eff.\ rate\propto \sqrt{1/d}$ With all else being equal, Helium effuses faster by a rate of $\sqrt{10}=3.16$.
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