OS-AP-12-62 · OpenStax College Physics for AP Courses 2e
Molecular Transport Phenomena: Diffusion, Osmosis, and Related Processes (Problem 62)
You can smell perfume very shortly after opening the bottle. To show that it is not reaching your nose by diffusion, calculate the average distance a perfume molecule moves in one second in air, given its diffusion constant D to be 1.00×10–6m2/s.