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 403f: 76


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Work Step by Step

Assuming that the temperature remains constant: $n_{He}=P_1V_1/RT$ $n_{Ar}=P_2V_3/RT$ $n_{He}+n_{Ar}=P_f(V_1+V_2)/RT=P_1V_1/RT+P_2V_2/RT$ $P_f=(P_1V_1+P_2V_2)/(V_1+V_2)$ $P_f=229\ mmHg$ $P_{He}=P_1V_1/(V_1+V_2)=87\ mmHg$ $P_{Ar}=P_2V_2/(V_1+V_2)=142\ mmHg$
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