Concept explainers
(a)
The number of molecules.
(a)
Answer to Problem 64PQ
The number of molecules is
Explanation of Solution
Write the equation of ideal
Here,
Write the expression for the volume.
Here,
Rearrange the expression from equation (I) to express in terms of number of molecules.
Conclusion:
Substitute
Thus, the number of molecules is
(b)
The average kinetic energy.
(b)
Answer to Problem 64PQ
The average kinetic energy is
Explanation of Solution
Write the equation of average kinetic energy.
Here,
Conclusion:
Substitute
Thus, the average kinetic energy is
(c)
The rms speed of oxygen.
(c)
Answer to Problem 64PQ
The rms speed of oxygen is
Explanation of Solution
Write the equation for the rms speed.
Here,
Conclusion:
Substitute
Therefore, the rms speed of oxygen is
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Chapter 20 Solutions
Physics for Scientists and Engineers: Foundations and Connections
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