Introductory Chemistry (5th Edition)

Published by Pearson
ISBN 10: 032191029X
ISBN 13: 978-0-32191-029-5

Chapter 11 - Gases - Exercises - Problems - Page 403: 75

Answer

The partial pressure of the helium is $10.7 atm$

Work Step by Step

We can find the partial pressure by using Dalton's Law of Partial Pressures which states the total pressure of a mixture of gases is simply the summation of the partial pressure of the gases; If the total pressure is $11.0 atm$ and the partial pressure of the oxygen gas is $0.30 atm$, the partial pressure of the helium gas is $11-0.3 = 10.7$ atm because $0.3 + 10.7 = 11.0$ atm.
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