Physics · Kinetic Theory of Gases
Consider a chamber at room temperature (27 °C) filled with a gas having a molecular diameter of 0.35 nm. To what pressure must the chamber be evacuated so that the molecules have a mean free path of 1 km? [Given: Boltzmann constant kB = 1.38 × 10-23 J/K]
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 11.22 × 10-5 Pa
- 20.98 × 10-5 Pa
- 30.76 × 10-5 Pa✓
- 40.54 × 10-5 Pa
Correct answer
0.76 × 10-5 Pa
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