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Surface tension is the tendency of liquid surfaces at rest to shrink into the minimum surface area possible. Surface tension is what allows objects with a higher density than water such as razor blades and insects (e.g. water striders) to float on a water surface without becoming even partly submerged.
The pentachloride is however a source of chlorine in many reactions. It chlorinates allylic and benzylic CH bonds. PCl5 bears a greater resemblance to SO 2 Cl 2, also a source of Cl 2. For oxidative chlorinations on the laboratory scale, sulfuryl chloride is often preferred over PCl 5 since the gaseous SO 2 by-product is readily separated.
It becomes rare beyond 40 km (25 mi) from the coast in southwestern Maine and 130 km (81 mi) inland in eastern Maine. This inland distribution pattern is largely influenced by the deposition of marine-derived nutrients, particularly chloride and sodium, which are transported inland by wind and precipitation. [71]
Dimers also occur in the liquid phase in dilute solutions with non-hydrogen-bonding solvents, and to a certain extent in pure acetic acid, [23] but are disrupted by hydrogen-bonding solvents. The dissociation enthalpy of the dimer is estimated at 65.0–66.0 kJ/mol, and the dissociation entropy at 154–157 J mol −1 K −1 . [ 24 ]
Louisville [b] is the most populous city in the Commonwealth of Kentucky, sixth-most populous city in the Southeast, and the 28th-most-populous city in the United States. [a] [11] By land area, it is the country's 24th-largest city, although by population density, it is the 265th most dense city.
Polyvinyl chloride in 1838 by Henri Victor Regnault (but the PVC will only be plasticized industrially nearly a century later). [45] Helio; Photovoltaic effect by Alexandre-Edmond Becquerel in 1839. [46] [47] Pasteurization by Louis Pasteur and Claude Bernard in April 1862. [48] Gallium by Paul Émile Lecoq de Boisbaudran in 1875. [40]