Talk:Benzene/@comment-107.145.172.10-20160229013054/@comment-24.216.77.224-20160702064219

Ugh, the lack of chemistry knowledge here hurts.

First off, pure nitrogen isn't cold, it's just easier to compress/store that way because it takes on liquid form. Secondly, you don't get nitrogenous compounds from breathing it, you get most of what you need by eating proteins/amino acides. This isn't a problem while diving. For the most part, there are microbes and plants that fix nitrogen into nitrogenous compounds.

Secondly, it takes energy to convert carbon dioxide back to oxygen. It's probably going to be far far easier to build a machine that uses energy from power sources to compress whatever air you need into tanks. Barring some magical sci-fi fuckery involving really miniaturized technology that you'd probably have to efficiently power from batteries.