Quote:

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According to the ideal gas law (pV = nRT) there is no difference in pressure rise of the different gases given a constant mass and volume.

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oh, oh, I know this one!

6.022 x 10^23

What do I win?

(It's been about 30 years since my college chem class, and you have no idea how little I get to use stuff like this.)

But I'm sure the question everyone wants answered is "what about acetone in the tires?" (I bet you thought I was gonna say ear wax...)

Back to the original subject, you have to admit it's a pretty clever idea to separate consumers from a little extra money on a tire sale: $5 per tire to fill it with nitrogen.