Image from this LinkedIn post
76 points
1 atmosphere, so sea level pressure, per Diána Ürge-Vorsatz
22 points
I feel like a ton of C02 at air pressure should be bigger.
I know it’s correct, but it looks like the amount of exhaust produced by a car idling for a few minutes, at a visceral level you just expect a literal tonne of gas to take up more volume.
5 points
*
I assume CO2 is only a portion of the exhaust. Not sure if that’s what you were meaning already?
Edit: No idea of the quality of this source, but:
So what’s coming out of a car exhaust is 13 per cent CO2, 13 per cent water (26 per cent sub-total) and 73 per cent nitrogen gas. The air that you’re breathing right now is 78 per cent nitrogen gas, 21 per cent oxygen, and one percent everything else.