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 403c: 41


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Work Step by Step

a,b) Since $\sqrt{\bar{u^2}}=\sqrt{3RT/M}$ Ratio $T/M$ for flask A is $135.4\ K.mol/g$ and $6.78\ K.mol/g$ for B, so flask A has molecules with bigger rms speed and consequently bigger kinetic energy per molecule. c,d) Since the volume is the same for both, $n\propto P/T$, and this ratio is $3.66×10^{-3}\ atm/K$ for flask A and $6.71×10^{-3}\ atm/K$ for B, therefore B has a greater number of molecules, and since it also has a gas with greater molecular weight, B has the bigger mass of gas.
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