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Squalane is the organic compound with the formula ((CH 3) 2 CH(CH 2) 3 CH(CH 3)(CH 2) 3 (CH 2) 3 CH(CH 3)(CH 2) 2) 2. A colorless hydrocarbon, it is the hydrogenated derivative of squalene, although commercial samples are derived from nature. [3] In contrast to squalene, due to the complete saturation of squalane, it is not subject to auto ...
Tammann temperature was pioneered by German astronomer, solid-state chemistry, and physics professor Gustav Tammann in the first half of the 20th century. [1]: 152 He had considered a lattice motion very important for the reactivity of matter and quantified his theory by calculating a ratio of the given material temperatures at solid-liquid phases at absolute temperatures.
The solidus temperature specifies the temperature below which a material is completely solid, [2] and the minimum temperature at which a melt can co-exist with crystals in thermodynamic equilibrium. Liquidus and solidus are mostly used for impure substances (mixtures) such as glasses , metal alloys , ceramics , rocks , and minerals .
Cans imported from the US often have odd sizes such as 3.8 L (1 US gallon), 1.9 L (1/2 US gallon), and 946 ml (2 US pints / 1 quart). In the UK and Australia, cans are usually measured by net weight. A standard size tin can holds roughly 400 g; though the weight can vary between 385 g and 425 g depending on the density of the contents.
The Simon–Glatzel equation [1] is an empirical correlation describing the pressure dependence of the melting temperature of a solid.The pressure dependence of the melting temperature is small for small pressure changes because the volume change during fusion or melting is rather small.
1 H hydrogen (H 2) use (H 2) 0.1 CRC ... Values refer to the enthalpy change between the liquid phase and the most stable solid phase at the melting point (normal ...
With an instantaneous temperature switch the initial fluid velocity is infinite, resulting in an initial infinite kinetic energy. In fact the liquid layer is often in motion, thus requiring advection or convection terms in the heat equation. The melt temperature may vary with size, curvature or speed of the interface.
The enthalpy of fusion is the amount of energy required to convert one mole of solid into liquid. For example, when melting 1 kg of ice (at 0 °C under a wide range of pressures), 333.55 kJ of energy is absorbed with no temperature change. The heat of solidification (when a substance changes from liquid to solid) is equal and opposite.