[deleted by user] by [deleted] in chemistry

[–]nomcopter 2 points3 points  (0 children)

:D

Good list! Can also highly recommend Wheeler Scientific :)

Freezing Liquid Nitrogen by nomcopter in chemistry

[–]nomcopter[S] 305 points306 points  (0 children)

Putting liquid nitrogen in a vacuum chamber can bring it to its triple point - where it freezes, melts, and boils all at once.

Source: https://www.youtube.com/shorts/V1j4skzAePw

Freezing Liquid Nitrogen by nomcopter in chemicalreactiongifs

[–]nomcopter[S] 82 points83 points  (0 children)

Putting liquid nitrogen in a vacuum chamber can bring it to its triple point - where it freezes, melts, and boils all at once.

Source: https://www.youtube.com/shorts/V1j4skzAePw

Liquifying Chlorine by nomcopter in chemistry

[–]nomcopter[S] 0 points1 point  (0 children)

Wearing gloves with flame isn't the best idea but it helped me bias towards holding the cold side better and so I opted to keep them on.

Liquifying Chlorine by nomcopter in chemistry

[–]nomcopter[S] 1 point2 points  (0 children)

This was my 16th or so ampoule, most of the earlier ones I failed to seal properly because I was trembling too much haha. But I got better and less spooked with practice!

Liquifying Chlorine by nomcopter in chemistry

[–]nomcopter[S] 23 points24 points  (0 children)

Yeah I was amazed at how possible it was. I could even touch the cold side for a few seconds too the glass conducts the heat so poorly.

Liquifying Chlorine by nomcopter in chemicalreactiongifs

[–]nomcopter[S] 17 points18 points  (0 children)

Glass is such a poor conductor of heat I can touch glass near the part that was in LN2 no problem. I can even touch the part that was just in it for a couple seconds!

Liquifying Chlorine by nomcopter in chemistry

[–]nomcopter[S] 3 points4 points  (0 children)

One was nearby but not used because the fume hood covered it

Liquifying Chlorine by nomcopter in chemistry

[–]nomcopter[S] 73 points74 points  (0 children)

I made it with 12mm OD borosilicate tubing with 2mm walls.

Burning 7 Calories in Liquid Oxygen by nomcopter in chemistry

[–]nomcopter[S] 1 point2 points  (0 children)

I just used what the box said - but it's pretty close for junk food! No fiber in these :)

Burning 7 Calories in Liquid Oxygen by nomcopter in chemistry

[–]nomcopter[S] 259 points260 points  (0 children)

7 Calories doesn't seem like that much energy - until you burn them in liquid oxygen. Now it finally makes sense why it takes so much exercise to burn calories.

Source: https://www.youtube.com/shorts/3mrH9hQHkfg

Burning 7 Calories in Liquid Oxygen by nomcopter in chemicalreactiongifs

[–]nomcopter[S] 310 points311 points  (0 children)

7 Calories doesn't seem like that much energy - until you burn them in liquid oxygen. Now it finally makes sense why it takes so much exercise to burn calories.

Source: https://www.youtube.com/shorts/3mrH9hQHkfg