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Bromochlorodifluoromethane (BCF), also referred to by the code numbers Halon 1211 and Freon 12B1, is a haloalkane with the chemical formula C F 2 Cl Br. It is used for fire suppression, especially for expensive equipment or items that could be damaged by the residue from other types of extinguishers. [ 1 ]
Emergency! Emergency! Emergency! is the debut double album by the American jazz fusion group The Tony Williams Lifetime featuring Williams with guitarist John McLaughlin and organist Larry Young. It was recorded and released in 1969 and was one of the first significant fusion recordings. [2] The album is commonly regarded as an influential ...
Priscilla. Anthony Jr. Jonathan. Anthony Tyrone "Tony" Evans Sr. (born September 10, 1949) is an American evangelical pastor, speaker, author, and widely syndicated radio and television broadcaster in the United States. Between 1976 and 2024, Evans served as senior pastor at the over-9,500-member Oak Cliff Bible Fellowship in Dallas, Texas.
[15] k 1 is the rate constant for chemical uptake from water at the respiratory surface (L*kg −1 *d −1). [15] C WD is the chemical concentration dissolved in water (g*L −1 ). [ 15 ] k 2 ,k E ,k G ,k B are rate constants that represent excretion from the organism from the respiratory surface, fecal excretion, metabolic transformation, and ...
The Evans–Polanyi model is a linear energy relationship that serves as an efficient way to calculate activation energy of many reactions within a distinct family. The activation energy may be used to characterize the kinetic rate parameter of a given reaction through application of the Arrhenius equation. The Evans–Polanyi model assumes ...
Tris (pentafluorophenyl)borane, sometimes referred to as "BCF", is the chemical compound (C6F5)3B. It is a white, volatile solid. The molecule consists of three pentafluorophenyl groups attached in a "paddle-wheel" manner to a central boron atom; the BC3 core is planar. It has been described as the “ideal Lewis acid ” because of its high ...
Gil Evans. Impulse! Ian Ernest Gilmore Evans (né Green; May 13, 1912 – March 20, 1988) [1] was a Canadian–American jazz pianist, arranger, composer and bandleader. He is widely recognized as one of the greatest orchestrators in jazz, playing an important role in the development of cool jazz, modal jazz, free jazz, and jazz fusion.