Quote:
|
Originally Posted by Gravdigr
2. Y'know when ya open that bottle of Bud Light/Caffeine Free Pepsi there's the little cloud of, what I assume to be, carbon dioxide in the neck of the bottle? I don't drink that cloud, I put a gentle puff of breath into the bottle to blow that little cloud away. Which has more co2, the little cloud, or the puff of used air that blows it out of the bottle?
|
Quote:
|
Originally Posted by glatt
I'm going to say it's the little cloud. Your breath (if you haven't been holding your breath and letting it build up) doesn't have very much carbon dioxide in it. Otherwise CPR wouldn't work.
|
Definitely the cloud--it's pure CO2, having come from a physical pressure change that releases only dissolved CO2 from the liquid. An exhaled breath is mostly normal air (i.e., still mostly nitrogen) that your alveoli didn't interact with. (Googled it for an exact number: roughly
4-5% CO2 in an average exhale.)