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Solid hydrogen is the solid state of the element hydrogen, achieved by decreasing the temperature below hydrogen's melting point of 14.01 K (−259.14 °C; −434.45 °F).
21 Ιουλ 2016 · The solid hydrogens are dominated by quantum effects, the most out standing property being that the rotation of the molecules is free down to the lowest temperatures, in the sense that the rotational quantum number J characterizing the rotational motion of the free molecules remains a good quantum number in all of the solid-state phases ...
Mechanical - Solid hydrogen is known to behave as almost a hydraulic fluid at temperatures near its melting point, with a measured shear strength of approximately 5 atm at about 10 K. The strength varies with temperature, such that at liquid helium temperatures and below the solid is at least a factor of 2 stronger and harder; its degree of ...
1 Ιαν 2022 · The partition is dependent on the temperature. Normal hydrogen at room temperature is a mixture of 75% ortho and 25% para hydrogen. In the lower temperature range <80K, para hydrogen is the more stable form. At 20K, in thermal equilibrium, the concentrations are 99.8% para and 0.2% ortho.
23 Απρ 2020 · Solid hydrogen has a massive quantum zero-point energy (ZPE), far greater than its latent heat of melting, and has a Debye temperature well above melting. These factors determine the behavior of hydrogen in the dense state.
• Hydrogen - Density and Specific Weight vs. Temperature and Pressure - Online calculator, figures and tables showing density and specific weight of hydrogen, H2, at temperatures ranging from -260 to 325 °C (-435 to 620 °F) at atmospheric and higher pressure - Imperial and SI Units.
In this paper thermal data on hydrogen in its various isotopic and ortho-para modifications are compiled and correlated. Data on properties of the gaseous, liquid, and solid states are presented in tables and graphs, and by use of formulas. Thermodynamic properties are given for the ideal gas state. In addition, tables based on the PVT
