Talk:Liquid nitrogen

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Contents 1 Temperature? 2 How is this possible? 3 To sell? 4 Possible Error?

[edit] Temperature?

I know that it would eventually return to room temperature, but what is the average temperature that Liquid Nitrogen is usually kept at? 71.190.143.208 00:09, 15 November 2007 (UTC)

Liquid nitrogen is kept at its boiling point, about -196 C.Plantsurfer 08:07, 15 November 2007 (UTC)

[edit] How is this possible?

Theres a man pouring LN2 on his head here [1] and here the same guy drinking LN2! [2] I thought LN2 was supposed to freeze you to death like in movies :D? --88.112.2.180 (talk) 20:22, 5 December 2007 (UTC)

1)I prefer mine with dry ice and a slice of lime. 2)Check out Leidenfrost effect 3) Don't try this at home (or in the lab, especially not my lab! (I still dream of retiring on a pension)) Plantsurfer (talk) 21:30, 5 December 2007 (UTC)

[edit] To sell?

Is it possible buying some? And if i throw it in the ground of my room (3x3x2,5m) at 27° how much it will cool the room? —Preceding unsigned comment added by 189.28.220.22 (talk) 13:17, 11 February 2008 (UTC)

I would guess you need some sort of license or position to buy liquid nitrogen. If your room were at 27°, you mean? Well, the nitrogen would most likely cool your room very little and the only real danger would be asphyxiation or mishandling of the gas due to the expansion. Under adult, professional, supervision, at their suggestion, I stuck my hand under a spray of liquid nitrogen. Nothing particularly special. Just a cool liquid. If I'd kept it there for a few seconds it probably would have hurt but I didn't. The nitrogen vaporized before hitting the floor. The plastic tube it flowed through quickly went hard and water vapor condensed around it. I put my hand to it and moved it around. I kept it still for a second and it started to sting very slightly. Remember, all under professional supervision and I asked first. Simple fact is, body heat will keep your tissue safe for a few seconds. So from experience, I can say that it would not cool your room significantly if at all. Nitrogen slush or a large vat of liquid nitrogen is what you want. SkepticBanner (talk) 04:20, 30 April 2008 (UTC)

It's cheaper than gasoline! Besselfunctions (talk) —Preceding comment was added at 18:21, 26 May 2008 (UTC)

[edit] Possible Error?

I think that the density is incorrectly stated on the liquid nitrogen page. Shouldn't it be closer to 0.8 g/ml, rather than 0.7 g/mL? Joshua Buchman jbuchman@fmschools.org —Preceding unsigned comment added by 69.40.146.83 (talk) 20:30, 19 May 2008 (UTC)

That is correct. The density of liquid nitrogen at its normal boiling point, 1 bar pressure, is 0.807 g per cc. Plantsurfer (talk) 21:15, 26 May 2008 (UTC)