Quote Originally Posted by kwinter View Post
One small correction.



Nope. The pO2 inside the tank is a whole lot higher. Just like everywhere else, the partial pressure equals the fraction times the total pressure. Air in a full aluminum 80 at 3000 psi (approx 200 bar or 201 ATA) has a pO2 of 42.21. Until you take a breath. If you could crawl inside the tank it would be like breathing air at 2000 meters depth.
Your math is flawed. I say this because you can not know the Psi, Bar, Ata, Ppm, Particial Pressures, identities of any of the gas or if the cat living inside is alive or dead until you open the tank and analyze the contents. When you come down to it that's the real point.