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The low thermal expansion and high melting point and tensile strength of tungsten originate from strong covalent bonds formed between tungsten atoms by the 5d electrons. [28] Alloying small quantities of tungsten with steel greatly increases its toughness. [17] Tungsten exists in two major crystalline forms: α and β.
Freezing point (°C) K f (°C⋅kg/mol) Data source; Aniline: ... Benzene: 0.87 80.1 2.65 5.5 –5.12 ... Boiling-point elevation; References
This is a list of the various reported boiling points for the elements, with recommended values to be used elsewhere on Wikipedia. ... 74 W tungsten; use: 6203 K ...
Tungsten, 74 W; Tungsten ... melting point comment = | boiling point K = | boiling point C = | boiling point F ... crystal structure comment = | lattice constant ...
The boiling point elevation happens both when the solute is an electrolyte, such as various salts, and a nonelectrolyte. In thermodynamic terms, the origin of the boiling point elevation is entropic and can be explained in terms of the vapor pressure or chemical potential of the solvent. In both cases, the explanation depends on the fact that ...
R is the ideal gas constant. M is the molar mass of the solvent. T b is boiling point of the pure solvent in kelvin. ΔH vap is the molar enthalpy of vaporization of the solvent. Through the procedure called ebullioscopy, a known constant can be used to calculate an unknown molar mass. The term ebullioscopy means "boiling measurement" in Latin.
The entropy of vaporization of XeF 6 at its boiling point has the extraordinarily high value of 136.9 J/(K·mol). [4] The characteristic of those liquids to which Trouton’s rule cannot be applied is their special interaction between molecules, such as hydrogen bonding. The entropy of vaporization of water and ethanol shows positive deviance ...
Boiling point: 80.1 °C (176.2 °F; 353.2 K) Solubility in water. 1.53 g/L (0 °C) ... Benzene is an organic chemical compound with the molecular formula C 6 H 6.