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Topic: Liquid Nitrogen to FREEZE H2O  (Read 2529 times)

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GFJOE

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Liquid Nitrogen to FREEZE H2O
« on: July 16, 2014, 01:20:05 AM »
Hello chemistry gurus!

how much liquid nitrogen does is take to freeze one tray of a residential refrigerator water tray?

thanks  Joseph Camerieri aka GF JOE(gluten free joe)
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Offline curiouscat

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Re: Liquid Nitrogen to FREEZE H2O
« Reply #1 on: July 16, 2014, 02:32:08 AM »
A back of envelope estimate says ~1.6 kg liq. N2 / kg water.

Approx.  half of that if you allow the evolved cold gas to equilibrium but that might be hard.
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GFJOE

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Re: Liquid Nitrogen to FREEZE H2O
« Reply #2 on: July 18, 2014, 04:20:04 PM »
Quote from: curiouscat on July 16, 2014, 02:32:08 AM
A back of envelope estimate says ~1.6 kg liq. N2 / kg water.

Approx.  half of that if you allow the evolved cold gas to equilibrium but that might be hard.

can you please tell how much is that in ounces?
my tray holds or my measured amount is 4.5 ounces... maybe I just convert kg to ounces? correct?
so how much nitrogen will freeze 4.5 ounces?
but I want to capture liq . nitrogen after it dissipates(freezes the water)..
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Offline Arkcon

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Re: Liquid Nitrogen to FREEZE H2O
« Reply #3 on: July 18, 2014, 07:14:57 PM »
We like to help people help themselves on this forum, not just spout answers.  You've been given a fair start:  curouscat: said, 1.6 kg liquid nitrogen to 1 kg pure water.  You say you have 4.5 ounces.  Can you calculate backward?
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Hey, I'm not judging.  I just like to shoot straight.  I'm a man of science.
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