My dad went and got a block of dry ice when we was cleaning our penny floor actually. He got pretty mad. He didn’t stick it in a container and by the time he got home. It all evaporated 😅 It was like a 50$ chunk of it
That's incorrect, room temperature is between the triple point temperature and below the critical temperature, so dry ice at room temperature would melt and evaporate, giving the condition, but never sublime at that temperature
@@dongxuli9682you are incorrect. At room temperature and at sea level, dry ice will not melt to a liquid. It will go straight to a gas. Please look it up before you comment further.
@@johnrandles9957You‘re all incorrect. The others because they chose to use absolute terms - "never" and "always" - while completely ignoring pressure. You because being at sea level doesn‘t equate being under the pressure of the atmosphere at sea level. Dry ice can be stored at sea level in pressurised containers without subliming - or melting.
Anyone who has ever been in or around a school knows that dry ice doesn't have a liquid form, and it goes directly from solid to gas (at least at atmospheric pressure). So to everyone who was surprised by this outcome: this is what you miss when you sleep during class.
To be fair, if you melt dry ice, a liquid will accumulate underneath the dry ice. Just that the liquid is regular water that condensed onto the dry ice.
The interesting thing is the fact that it was placed in something that was low balled as being 1,000 degrees hot and they still had to speed up the footage.
Wait, if dry ice is only -78c, does that mean when there was set a world record for the coldest temperature there wasnt co2 in the air at all, it was in its solid state?
You could "contain" it in it's solid or gas form but that's takes space and/or energy better to just let it go and focus on counteracting the result by managing/supporting a native natural carbon-sink, like your native grasslands(the most important) and native forests. The biologically active soils of these ecosystems sequester the most CO2 back into the carbon cycle and not into the atmosphere
Only thing I learned today is that dry ice doesn't visably start sublimating when put in a red hot foundry. I was expecting it to loose size fast enough to slip free of the tongs and plop in.
What happens? Dry ice sublimates at -78°c / 109°f... The same thing that happens at room temperature, or a refrigerator, or a freezer.... it just does it faster.
It's actually creating a shield around itself of gas that is taking the heat away escaping up the top of the foundry. Luckily the foundry isn't sealed or it would explode. You've poured the same amount of water into the foundry it would be a mess wouldn't it because the water does not have a way to insulate itself
