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Enthalpy of Fusion
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High Quality Content by WIKIPEDIA articles! The standard enthalpy of fusion (symbol: Hfus), also known as the heat of fusion or specific melting heat, is the amount of thermal energy which must be absorbed or evolved for 1 mole of a substance to change states from a solid to a liquid or vice versa. It is also called the latent heat of fusion or the enthalpy change of fusion, and the temperature at which it occurs is called the melting point. When thermal energy is withdrawn from a liquid or solid, the temperature falls. When heat energy is added the temperature rises. However, at the transition point between solid and liquid (the melting point), extra energy is required (the heat of fusion). To go from liquid to solid, the molecules of a substance must become more ordered. For them to maintain the order of a solid, extra heat must be withdrawn. In the other direction, to create the disorder from the solid crystal to liquid, extra heat must be added. The heat of fusion can be observed by measuring the temperature of water as it freezes.
Weitere Informationen
- Allgemeine Informationen
- GTIN 09786130252847
- Editor Frederic P. Miller, Agnes F. Vandome, John McBrewster
- Sprache Englisch
- Genre Physik & Astronomie
- Größe H220mm x B150mm x T5mm
- Jahr 2009
- EAN 9786130252847
- Format Kartonierter Einband
- ISBN 978-613-0-25284-7
- Titel Enthalpy of Fusion
- Untertitel Enthalpy, Internal energy, Solid, Mole (unit), Liquid, Temperature, Melting point, Molecule, Joule, International System of Units, Calorie, British thermal unit, Thermal mass
- Gewicht 147g
- Herausgeber Alphascript Publishing
- Anzahl Seiten 88
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