The mean free path of air molecules at room temperature and atmospheric pressure is about: A) 10^-3 m B) 10^-5 m C) 10^-7 m D) 10^-9 m E) 10^-11 m

Question

Quizplus · Accepted Answer

The mean free path of air molecules at room temperature and atmospheric pressure is about 10^-7 m. This is because the mean free path is inversely proportional to the density of the gas, and the density of air at room temperature and atmospheric pressure is about 10^-3 kg/m³.

The Mean Free Path of Air Molecules at Room Temperature