THE PRACTICE STUDIO
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PRACTICE / Molecular mean free path
Change collision size and density
Two dilute hard-sphere gases are at the same temperature. Gas B has three times the pressure of gas A and twice its molecular collision diameter.
Find the ratio ℓB/ℓA of mean free paths.
Organize the givens & assumptions
- pB/pA = 3
- dB/dA = 2
- TB = TA
Identical-particle hard-sphere model within each gas; ideal-gas number density; compare equilibrium states at equal absolute temperature.
- A
- B
- C
- D
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