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i think it had something to do with CO2 can be made into supercritical state relatively easily, not for nitrogen or other common gases.
by ycui1986 9mo ago
i think it had something to do with CO2 can be made into supercritical state relatively easily, not for nitrogen or other common gases.
- raverbashing 9mo agoThis pretty much You can liquefy CO2 at a higher temperature than N2
- nine_k 9mo agoYou can do it easily with something like propane, or other larger molecules. But CO2 is non-flammable, largely non-toxic, and easily available.