- #1

- 66

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For monotomic molecules, the avg kinetic energy is 3/2 k_b T

for diatomic, it is 5/2 k_b T

PV = n_particles * k_b T

Why is there no factor of 3/2 or 5/2 in the ideal gas law? How is it factored out?

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- Thread starter vjk2
- Start date

- #1

- 66

- 0

For monotomic molecules, the avg kinetic energy is 3/2 k_b T

for diatomic, it is 5/2 k_b T

PV = n_particles * k_b T

Why is there no factor of 3/2 or 5/2 in the ideal gas law? How is it factored out?

- #2

cepheid

Staff Emeritus

Science Advisor

Gold Member

- 5,192

- 38

pressure * total volume is not equal to total energy.

energy density * total volume is equal to total energy.

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