Say you have liquid nitrous oxide in a standard gas cylinder (about 55 bar) at room temperature. Normally the cylinder sits upright and gas is released via valve.
Now let's assume you released liquid instead of gas from the cylinder (either via built-in siphon tube or turning cylinder upside down). What would happen to the released liquid N2O at atmospheric pressure?
Looks like it should start boiling? But boiling can occur just at -88 °C. So will it cool itself down to this temperature on its release? Or will the liquid immediately vaporize upon release?