At normal atmospheric pressure, what is the only thing that would be a liquid at absolute zero?

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At normal atmospheric pressure, what is the only thing that would be a liquid at absolute zero?

Question #150470. Asked by BigTriviaDawg.
Last updated Feb 04 2024.
Originally posted Jan 14 2024 9:28 PM.

psnz

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psnz

5 year member
1008 replies avatar

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Helium is the only element that remains liquid down to absolute zero at normal pressures.

Helium happens to be the only element that can’t be solidified or frozen at normal atmospheric pressure.

Only once you apply a pressure of 25 atmospheres at Helium’s freezing point of -458 °F (-272.22 °C) can you solidify it.

https://ctpcryogenics.com/whats-the-freezing-point-of-helium/

Response last updated by psnz on Jan 14 2024.
Jan 14 2024, 9:30 PM

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Answer 1

wellenbrecher

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wellenbrecher

20 year member
703 replies

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Here's an interesting video about why helium can't freeze:

https://www.youtube.com/watch?v=3D0oJ8JsTpU

Feb 04 2024, 7:39 AM

At normal atmospheric pressure, what is the only thing that would be a liquid at absolute zero?

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