Liquids at -70 Kelvin or less

[L42yB]

I was wondering if anyone could tell me what things are are liquids at temperatures below -70 kelvin.

 

I know the boiling point of liquid nitrogen is -77. Are there any others?

Edited October 19, 2011 by L42yB

[mathematic]

He4 doesn't freeze at all.

[questionposter]

Well, helium does liquify but it liquifies at near absolute 0, and the purpose of Kelvin units is to not have negative numbers isn't it? Isn't 0 Kelvin the same as Absolute 0? So how could you have negative Kelvin?

Edited October 19, 2011 by questionposter

[Moontanman]

Hydrogen comes to mind... uh oh this sounds like a science class question....

[swansont]

Well, helium does liquify but it liquifies at near absolute 0, and the purpose of Kelvin units is to not have negative numbers isn't it? Isn't 0 Kelvin the same as Absolute 0? So how could you have negative Kelvin?

You are correct. Kelvins is an absolute scale and all values should be positive. e.g. Nitrogen liquifies/boils at 77 K, not -77 K.