All Questions
7 questions
0
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3
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Doubt regarding kinetic theory of gases
My school teacher had told me that one of the assumptions of Kinetic Theory of Gases was that the molecules of a given gas were all identical and to be considered as very small elastic spheres. ...
- 123
10
votes
5
answers
2k
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Why expansion of real gases lead to cooling?
Paul Hewitt writes in his book
Expansion of real gases lead to cooling as average translational kinetic energy per molecule decreases.
The reason given is:
During Expansion molecules collide with ...
- 1,395
0
votes
1
answer
759
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Number of degrees of freedom for a gaseous mixture
I came across the formula to find the number of degrees of freedom in a gaseous mixture which is as follows:
$$f_\mathrm{mix}
=\frac{\sum n_if_i}{\sum n_i}$$
Now it has been mentioned in this lecture ...
-1
votes
2
answers
4k
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How many Degrees of Freedom do Linear Triatomic Gas Molecules Have and Why?
I read this in one of my textbooks that stated
Linear Triatomic Gas Molecules like CO2, HCN, CS2 in which all the atoms are linear, the total number of degrees of freedom are
Nf = NT + NR + NV
where ...
2
votes
1
answer
87
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Kinetic theory of physics [closed]
$$E = (3/2) kT$$
For average kinetic energy of a molecule gas.The constant $k$ does not depend on the type of molecule. Can this result be true for both hydrogen and chlorine?
- 21
4
votes
3
answers
6k
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$E=kT$ or $\frac32kT$?
Basically, which is the correct formula for thermal energy, and is this the same as kinetic energy? My notes are pretty conflicting on this topic, and I'm getting pretty confused.
- 51
16
votes
7
answers
142k
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How to deduce $E=(3/2)kT$?
It says in my course notes for undergraduate environmental physics that a particle has so-called "kinetic energy"
$$E=\frac{3}{2}kT=\frac{1}{2}mv^{2}$$
Where does this formula come from? What is $k$?...
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