Search results
Results from the WOW.Com Content Network
Calcium chloride was apparently discovered in the 15th century but wasn't studied properly until the 18th century. [11] It was historically called "fixed sal ammoniac" (Latin: sal ammoniacum fixum [12]) because it was synthesized during the distillation of ammonium chloride with lime and was nonvolatile (while the former appeared to sublime); in more modern times (18th-19th cc.) it was called ...
In biochemistry, the molar absorption coefficient of a protein at 280 nm depends almost exclusively on the number of aromatic residues, particularly tryptophan, and can be predicted from the sequence of amino acids. [6] Similarly, the molar absorption coefficient of nucleic acids at 260 nm can be predicted given the nucleotide sequence.
For instance, water warms when treated with CaCl 2 (anhydrous calcium chloride) as a consequence of the large heat of hydration. However, the hexahydrate, CaCl 2 ·6H 2 O cools the water upon dissolution. The latter happens because the hydration energy does not completely overcome the lattice energy, and the remainder has to be taken from the ...
Chloride is part of gastric acid (HCl), which plays a role in absorption of electrolytes, activating enzymes, and killing bacteria. The levels of chloride in the blood can help determine if there are underlying metabolic disorders. [20] Generally, chloride has an inverse relationship with bicarbonate, an electrolyte that indicates acid-base ...
Other common desiccants include activated charcoal, calcium sulfate, calcium chloride, and molecular sieves (typically, zeolites). Desiccants may also be categorized by their type, either I, II, III, IV, or V. These types are a function of the shape of the desiccant's moisture sorption isotherm. Alcohols and acetones are also dehydrating agents.
The sodium adsorption ratio (SAR) is an irrigation water quality parameter used in the management of sodium-affected soils.It is an indicator of the suitability of water for use in agricultural irrigation, as determined from the concentrations of the main alkaline and earth alkaline cations present in the water.
The color of chemicals is a physical property of chemicals that in most cases comes from the excitation of electrons due to an absorption of energy performed by the chemical. The study of chemical structure by means of energy absorption and release is generally referred to as spectroscopy .
calcium chloride: 10043–52–4 CaCl 2 •6H 2 O: calcium chloride hexahydrate: 7774–34–7 CaCl 2 O 2: calcium hypochlorite: 7778–54–3 CaCr 2 O 7: calcium chromate: 14307–33–6 CaF 2: calcium fluoride: 7789–75–5 CaHPO 4: calcium hydrogenorthophosphate: 7757–93–9 CaH 2: calcium hydride: 7789–78–8 Ca(H 2 PO 2) 2: calcium ...