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Comments re Chapter 15 Problems:

15-1	Very short T/F question, but the distinction made is important.
15-2	A slightly longer T/F question.
15-3	How much translational energy does a gas have at 298 K?
15-5	Almost a thought problem.
15-6	A problem that is often done in General Chemistry courses.
15-7	Another problem that could be done in a General Chemistry course.
15-10	Another T/F problem. Understanding the behavior of gases is important.
15-21	A somewhat messy derivation of a formula that turns out to be simple. What is needed is the right starting equation and basic calculus. It is necessary to be careful taking the (somewhat complicated) derivative and to recognize that exponential functions can never equal 0 unless the argument is negative and infinite.
15-24	A problem that is much easier than it looks. If you find yourself evaluating a messy integral take a break, then look again.
15-26	Similar to problem 15-21, but this time in 1D rather than in 3D.
15-29	Very short problem that makes an interesting point.
15-41	A problem based on the barometric formula.
15-42	The barometric formula applied to daily life. How much does the pressure fall per story of a standard building? (The answer, of course, is not very much.)
15-60	Another one of Levine's thought problems.
15-30	Another problem that could be given to good students in General Chemistry. Levine doesn't ask that the gas be identified, but doing so is not difficult.
15-40	How far do gas molecules travel between collisions (assuming a container large enough that collisions with the walls do not happen first)? A good exercise in cancelling units.
15-41	A problem based on the barometric formula.
15-42	The barometric formula applied to daily life. How much does the pressure fall per story of a standard building? (The answer, of course, is not very much.)
15-46	An exercise in the prediction of a heat capacity. Look up Cp for CH4 at 298 K in Levine's Appendix and compare with the predicted value. [Notes/ For a perfect gas Cp,m = Cv,m +R. If the equipartition rule were valid then each translational and each rotational degree of freedom would contribute R/2 to Cv,m and each vibrational degree of freedome would contribute 2(R/2) = R.]
15-48	Calculation of the rms speed of a dust particle. Another good exercise in the cancelling of units.
15-55	One of Levine's thought problems.
15-60	Another one of Levine's thought problems.

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