Nitrogen Gas Is Heated by a Pulsed Laser to 50

Multiple Choice

Nitrogen gas is heated by a pulsed laser to 50 000 K. If the diameter of the nitrogen atoms is assumed to be 1.0 × 10−¹⁰ m, and the pressure is 1.0 atm, what is the mean free path?

A) 1.5 × 10−⁴ m
B) 1.5 × 10−⁷ m
C) 1.5 × 10−¹⁰ m
D) 1.5 × 10−¹⁴ m
E) 1.5 × 10−² m