21. Kinetic Theory of Ideal Gases / Mean Free Path of Gases / Problem 3
Problem 3
In a vacuum chamber, the air pressure is 1.5 × 10-12 mm of Hg at a temperature of 25°C. Calculate the i) number density and ii) mean free path of a molecule. Assume that the diameter of the air molecule is 3.7 × 10-10 m.