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Liquid hydrogen (H 2 (l)) is the liquid state of the element hydrogen.Hydrogen is found naturally in the molecular H 2 form. [4]To exist as a liquid, H 2 must be cooled below its critical point of 33 K.
This is a list of the various reported boiling points for the elements, with recommended values to be used elsewhere on Wikipedia. ... 1 H hydrogen (H 2) use: 20.271 ...
Boiling point (H 2) 20.271 K (− ... hydrogen's only emission at point of use is water vapor, ... Also, liquid hydrogen is a cryogen and presents dangers ...
Freezing point (°C) K f (°C⋅kg/mol) Data source; Aniline: ... Water: 100.00 0.512 0.00 –1.86 ... Boiling-point elevation; References
1 H hydrogen; use (T/K) 15 20 CRC.a (T/°C ... liquid, m.p. to 1000 K: log ... The temperature at standard pressure should be equal to the normal boiling point, ...
Water boiling at 99.3 °C (210.8 °F) at 215 m (705 ft) elevation. The boiling point of a substance is the temperature at which the vapor pressure of a liquid equals the pressure surrounding the liquid [1] [2] and the liquid changes into a vapor. The boiling point of a liquid varies depending upon the surrounding environmental pressure.
Before getting to that point, however, "lifestyle changes, such as eating a healthy diet, exercising, and quitting smoking, are often recommended," Nagata says.
The triple points of several substances are used to define points in the ITS-90 international temperature scale, ranging from the triple point of hydrogen (13.8033 K) to the triple point of water (273.16 K, 0.01 °C, or 32.018 °F).