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Wiswesser line notation (WLN), invented by William J. Wiswesser in 1949, [1] [2] [3] [4] [5] was the first line notation capable of precisely describing complex ...
A counts line is required, and must be first. It specifies the number of atoms, bonds, 3D objects, and Sgroups. It also specifies whether or not the CHIRAL flag is set. Optionally, the counts line can specify molregno. This is only used when the regno exceeds 999999 (the limit of the format in the molfile header line). The format of the counts ...
The first edition was edited by John H. Perry who was a PhD physical chemist and chemical engineer for E. I. du Pont de Nemours & Co. W. S. Calcott (ChE) of DuPont was his assistant editor. It was published in 1934. The second edition was published in 1941.
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The current Seventh Edition, published in 2004, continues its successful tradition of being used as a textbook in university undergraduate chemical engineering courses. It is widely used in colleges and universities throughout the world, and often referred just "McCabe-Smith-Harriott" or "MSH".
1972–1984: 4th edition in 25 volumes, last edition in German language [4] 1985–1996: 5th edition, in English only, entitled Ullmann's Encyclopedia of Industrial Chemistry, in 36 volumes [citation needed] 2002–2007: 6th edition in 40 volumes [4] 2011–2014: 7th edition in 40 print volumes, with ongoing changes and additions to the online ...
The dividing line between metals and nonmetals can be found, in varying configurations, on some representations of the periodic table of the elements (see mini-example, right). Elements to the lower left of the line generally display increasing metallic behaviour; elements to the upper right display increasing nonmetallic behaviour.
Chemistry nerds, it's your time to shine. These pick up lines will help you break the frozen H2O. The post 45 Chemistry Pick Up Lines Guaranteed to Get a Reaction appeared first on Reader's Digest.