Has anyone made a calculation for example, how much (or the mean) time it takes for an individual gas molecule to be displaced a distance of one meter (measured straight) from its original location? For example, air molecule at ambient pressure with a mean free path of 68 nm. That would be an incredible amount of collisions before it reaches 1 meter from its initial location. I can't find any such info in google and I'm not in the field of chemistry. Could anyone give me a mean figure, appreciate it!