Dictionary of Chemistry [6th Ed.]
Chargaff’s rule The principle that in any sample of DNA the amount of adenine equals the amount of thymine and the amount of gua ...
1802 by Joseph *Gay-Lussac. Thus the law is also known as Gay-Lussac’s law. An equation similar to that given above applies to p ...
with an inert-gas conÜguration [Ar]. The bonding in calcium chloride is the electrostatic attraction between the ions. Covalentb ...
hydrogen. In methane 12 g of carbon react with 4 g of hydrogen. In hydro- gen sulphide, 32 g of sulphur react with 2 g of hydrog ...
chemical markup language (CML)A markup language used to express chemical information. CML is an extension of XML (extensible mar ...
which thus contains a higher concen- tration of protons than the matrix. This creates an electrochemical gra- dient across the i ...
chiralityThe property of existing in left- and right-handed structural forms. See optical activity. chirality elementThe part of ...
tion of chloric(I) acid in hot solutions. It is both a strong acid and a power- ful oxidizing agent; hot solutions of the acid o ...
rived from chloros, the Greek word for green. chloroacetic acids See chloro- ethanoic acids. chlorobenzene A colourless highly Û ...
insecticides, and wood preservatives, and in making dyes. They form con- densation polymers of the bakelite type with methanal. ...
graphical record produced in *gas chromatography. chromatography A technique for analysing or separating mixtures of gases, liqu ...
be heated with carbon in an electric furnace to give ferrochrome, which is used in making alloy steels. The metal is also used a ...
lower (+2) oxidation state; e.g. chro- mous chloride is chromium(II) chlo- ride (CrCl 2 ). chromyl chloride (chromium oxy- chlor ...
tem. For example, the sequence for some common ligands is I, Br, Cl, SO 3 H, OCOCH 3 , OCH 3 , OH, NO 2 , NH 2 , COOCH 3 , CONH ...
change from A to B, and VBand VA are the volumes of B and A respec- tively. In the case of a transition from liquid to vapour, t ...
quantity (the polarizability) and a macroscopic quantity (the dielectric constant); it was derived using macroscopic electrostat ...
ment is ABCABC.... See also cubic crystal. A An interactive version of cubic close- packing An interactive version of hexagonal ...
the high temperatures and pressures) continue, there is a progressive trans- formation of the deposit: the propor- tion of carbo ...
mals (see essential element). ArtiÜ- cially produced cobalt–60 is an im- portant radioactive tracer and cancer-treatment agent. ...
Many vitamins are precursors of coenzymes. See also cofactor. coenzyme A (CoA)A complex or- ganic compound that acts in conjunc- ...
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