1. We first started looking at the Ideal Gas in back in Chapter 3. Now we're coming back to the Ideal Gas, and are once again finding expressions for various macroscopic parameters that characterize the Ideal Gas (energy, entropy, pressure, etc.).
In at least a couple of sentences, explain what's different between what we did in Chapter 3 and what we're doing now in Chapter 6. (Hint: what variable seems to have a lot of significance now?)
Enter your answer here:
2. If we consider polyatomic molecules which can vibrate and rotate, we must modify the Grand Partition Function . Suppose we have polyatomic molecules which vibrate as simple harmonic oscillators, so that their vibration energies are given by . From this, we can write out the partition function of the internal (vibrational) states as .
For most diatomic molecules at ordinary temperatures, is very large (of the order of 0.1 eV). In this case, approximately what does the expression for Zint simplify to?
3. Which of the following is true about the classical distribution function?
Check the correct answer: a) It is a result which is completely classical in nature (hence its name!).b) It pertains to situations in which the average occupancy in a given orbital is very large compared to 1.c) It is valid when the average number of atoms in an orbital is very small.d) It pertains to both monatomic and polyatomic ideal gases. Below is a space for your thoughts, including general comments about today's assignment (what seemed impossible, what reading didn't make sense, what we should spend class time on, what was "cool", etc.): You may change your mind as often as you wish. When you are satisfied with your responses click the SUBMIT button.
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