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For questions about the ideal gas law or gases which can be well approximated as an ideal gas.
10
votes
Accepted
Will entropy increase in adiabatic expansion?
The answer to your question is yes and no. You are correct in supposing that as an ideal gas expands the entropy will increase as it has more space to occupy and so the number of ways the molecules ca …
6
votes
Accepted
Molecular collisions in an ideal gas
The ideal gas is a 'model' of how an actual gas behaves. It is still used because it agrees with many different types of experiments on gasses, but its limitations are also recognised.
The initial ass …
2
votes
Accepted
Number of possible microscopic states and their probabilities
Some notes I had easily at hand may help. You have already calculated the probability of obtaining the chance with a number $k$ of type of ball (or molecule) out of a total on $n$ is
$$\displaystyle p …
1
vote
What is the physical significance of the universal gas constant R?
From kinetic theory the total kinetic energy of an ideal gas is $\frac{1}{2}mC^2 $ where $C$ is the root mean square velocity. This is also equal to $\frac{3}{2}RT$ which means that the gas constant $ …
4
votes
In collision theory why we multiply collision frequency by N/2?
I'm not sure if this answers your question, but in the special case where a collision/reaction combines two identical molecules $\mathrm{A+A} $ the number of indistinguishable combinations, i.e. the n …