2007-07-20 19:00:01 · 6 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
Using the simple law of gasses, PV = nRT, the pressure is increased dramatically, causing the pressure to go up proportionally (on the order of hundreds of degrees). The heat is dispersed, and once the compressed gas reaches room-temperature, the pressure is reduced to normal, causing an extreme drop in temperature, crystallizing the CO2. The small crystals are then compressed into blocks or pellets.
2007-07-20 19:07:33 · answer #1 · answered by MooseBoys 6 · 0⤊ 0⤋
If you turn up-down a gas container which has Carbon dioxide in it (it means that the valve becomes down) and you open the valve, after a while you can see the freezed CO2 comes out like snow crystals.
2007-07-20 22:46:36 · answer #2 · answered by MO. NO 1 · 0⤊ 0⤋
You can either cool the gas to the sublimation point or pressurize the gas until it becomes a liquid, and then cool the liquid. Take your choice.
2007-07-20 19:07:57 · answer #3 · answered by cattbarf 7 · 0⤊ 0⤋
Carbon di oxide is stored under high pressure so that it leads to change of state ie., it undergoes sublimation.
2007-07-20 20:00:48 · answer #4 · answered by jinjoo 1 · 0⤊ 0⤋
Check your local welder supply company. They are a reliable source round here.
2016-05-19 01:02:35 · answer #5 · answered by ? 3 · 0⤊ 0⤋
Why? By cooling it of course, after compression.
2007-07-20 19:07:39 · answer #6 · answered by Swamy 7 · 0⤊ 0⤋