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Liquid hydrogen also has a much higher specific energy than gasoline, natural gas, or diesel. [12] The density of liquid hydrogen is only 70.85 kg/m 3 (at 20 K), a relative density of just 0.07. Although the specific energy is more than twice that of other fuels, this gives it a remarkably low volumetric energy density, many fold lower.
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 (°C) K b (°C⋅kg/mol) Freezing point (°C) K f (°C⋅kg/mol) Data source; Aniline: 184.3 3.69 –5.96 –5.87 K b & K f [1] Lauric acid:
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.
1 H hydrogen (H 2) use (H 2) 0.904 CRC (H 2) 0.90 LNG: 0.904 ... Values refer to the enthalpy change in the conversion of liquid to gas at the boiling point (normal ...
Liquid hydrogen is a common rocket propellant, and it can also be used as the fuel for an internal combustion engine or fuel cell. [citation needed] Solid hydrogen can be made at standard pressure, by decreasing the temperature below hydrogen's melting point of 14.01 K (−259.14 °C; −434.45 °F).
Liquid hydrogen is used to cool nozzles of rocket engines. Waterless coolant is used as an alternative to conventional water and ethylene glycol coolants. With higher boiling points than water (around 370F), the cooling technology resists boil over. The liquid also prevents corrosion. [4]