View Full Version : Basic question about CO2

Cuddles McKitten
February 25th, 2011, 04:59 PM
CO2 is denser than nitrogen and oxygen. When it bubbles up from beneath a primeval lake in a valley, people and animals living in the valley frequently asphyxiate. I seem to also remember that you can pour it into bottles to preserve wine while its being aged.

Here's where I get confused. How does CO2 get into the atmosphere to float around if it's so dense? It obviously does get up there, because if it didn't, plants wouldn't be able to photosynthesize and grow in high places and everyone going onto the ocean would promptly suffocate. Not being able to answer this simple question is making me waste time playing with Google rather than doing my job. Can anyone explain it to me?

February 25th, 2011, 05:06 PM

if you put mineral oil in a cup filled half way, and then fill the rest with water, the oil will sink below the oil. but if you stir it, everything gets mixed up, and doesn't settle again until the stirring stops.

wind never stops.

Cuddles McKitten
February 25th, 2011, 05:08 PM
Thanks. Now I can concentrate again. :)