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Theories of chemical structure were first developed by August Kekulé, Archibald Scott Couper, and Aleksandr Butlerov, among others, from about 1858. [4] These theories were first to state that chemical compounds are not a random cluster of atoms and functional groups, but rather had a definite order defined by the valency of the atoms composing the molecule, giving the molecules a three ...
Water is an inorganic compound with the chemical formula H 2 O.It is a transparent, tasteless, odorless, [c] and nearly colorless chemical substance.It is the main constituent of Earth's hydrosphere and the fluids of all known living organisms (in which it acts as a solvent [20]).
The word is a compound of the Iberian languages' words for "water" (agua in Castilian; aigua in Catalan; água in Portuguese; auga in Galician) and "burning"/"fiery" (ardiente in Castilian; ardent in Catalan; ardente in Portuguese and Galician).
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Citral is an acyclic monoterpene aldehyde. Being a monoterpene, it is made of two isoprene units.Citral is a collective term which covers two geometric isomers that have their own separate names; the E-isomer is named geranial (trans-citral; α-citral [2]) or citral A.
Agua Mineral Salus is a patented brand of mineral water produced by the company Salus SA. Its industrial base is in Lavalleja Department , Uruguay . The plant is located at the site of the mineral spring , 110 kilometres (68 mi) northeast of Montevideo and 10 kilometres (6.2 mi) west of Minas .
[1] Poly(3,4-ethylenedioxythiophene) polystyrene sulfonate ( PEDOT:PSS ) is a composite material where PEDOT (the conductive polymer ) provides electrical conductivity, and PSS ( polystyrene sulfonate ) acts as a counter-ion to balance the charge and improve the water solubility and processability of PEDOT.
It is a white solid that is soluble in hot water. A variety of organic derivatives are known. The term "biuret" also describes a family of organic compounds with the chemical formula R 1 R 2 N−C(=O)−N(R 3)−C(=O)−NR 4 R 5, where R 1, R 2, R 3, R 4 and R 5 are hydrogen, organyl or other groups.