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The density of liquid helium-4 at its boiling point and a pressure of one atmosphere (101.3 kilopascals) is about 125 g/L (0.125 g/ml), or about one-eighth the density of liquid water. [ 1 ] Liquefaction
Density, liquid phase. 2 He helium-4; Donnelly et al. 0.1249772 g/cm 3 ... "The Observed Properties of Liquid Helium at the Saturated Vapor Pressure".
This condensation occurs in liquid helium-4 at a far higher temperature (2.17 K) than it does in helium-3 (2.5 mK) because each atom of helium-4 is a boson particle, by virtue of its zero spin. Helium-3, however, is a fermion particle, which can form bosons only by pairing with itself at much lower temperatures, in a weaker process that is ...
Helium-4 (4 He) is a stable isotope ... When liquid helium-4 is cooled to below 2.17 ... exactly as does the charge density of helium's own electron cloud.
Below its boiling point of 4.22 K (−268.93 °C; −452.07 °F) and above the lambda point of 2.1768 K (−270.9732 °C; −455.7518 °F), the isotope helium-4 exists in a normal colorless liquid state, called helium I. [30] Like other cryogenic liquids, helium I boils when it is heated and contracts when its temperature is lowered. Below the ...
That’s where helium comes in: With a boiling point of minus 452 degrees Fahrenheit, liquid helium is the coldest element on Earth. Pumped inside an MRI magnet, helium lets the current travel ...
Calculated using Wikipedia reported values for density (21450 kg/m 3), ... 2 He helium (liquid) use: 180: −268.9 °C CRC: ... (liquid) use: 1451.4: 20 °C CR2: 1460 ...
Density, liquid at boiling point and 1 atm ... Helium (industrial grade) 4.20–4.90 Helium (laboratory grade) 22.300–44.90 Argon: 2.70–8.50 Neon: 60–120