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Chemically, phenyethanolamine is an aromatic compound, an amine, and an alcohol. The amino-group makes this compound a weak base, capable of reacting with acids to form salts. Two common salts of phenylethanolamine are the hydrochloride, C 8 H 11 NO.HCl, m.p. 212 °C, [6] and the sulfate, (C 8 H 11 NO) 2.H 2 SO 4, m.p. 239–240 °C. [2] [9]
Mass transfer is the net movement of mass from one location (usually meaning stream, phase, fraction, or component) to another. Mass transfer occurs in many processes, such as absorption, evaporation, drying, precipitation, membrane filtration, and distillation. Mass transfer is used by different scientific disciplines for different processes ...
The three isomers of triazine are distinguished by the positions of their nitrogen atoms, and are referred to as 1,2,3-triazine, 1,2,4-triazine, and 1,3,5-triazine. Other aromatic nitrogen heterocycles are pyridines with one ring nitrogen atom, diazines with 2 nitrogen atoms in the ring, triazoles with 3 nitrogens in a 5 membered ring, and ...
1,4-Dioxin (also referred as dioxin or p-dioxin) is a heterocyclic, organic, non-aromatic [2] compound with the chemical formula C 4 H 4 O 2.There is an isomeric form of 1,4-dioxin, 1,2-dioxin (or o-dioxin). 1,2-Dioxin is very unstable due to its peroxide-like characteristics.
Mass transfer – Net movement of mass from one location, phase, etc. to another; Mass flux – Vector quantity describing mass flow rate through a given area; Osmosis – Migration of molecules to a region of lower solute concentration; Permeation – Penetration of a liquid, gas, or vapor through a solid
Cyclotetradecaheptaene, often referred to as [14]annulene, is a hydrocarbon with molecular formula C 14 H 14, which played an important role in the development of criteria (Hückel's rule) for aromaticity, a stabilizing property of central importance in physical organic chemistry. It forms dark-red needle-like crystals.
Mass: the spreading and dissipation of odors in air is an example of mass diffusion. Energy: the conduction of heat in a solid material is an example of heat diffusion . Momentum: the drag experienced by a rain drop as it falls in the atmosphere is an example of momentum diffusion (the rain drop loses momentum to the surrounding air through ...
Using this form of nomenclature 1,3,5,7-cyclooctatetraene is [8]annulene and benzene is [6]annulene (and occasionally referred to as just 'annulene'). [ 2 ] [ 3 ] The discovery that [18]annulene possesses a number of key properties associated with other aromatic molecules was an important development in the understanding of aromaticity as a ...