That fraction of heat (energy) content not available for the performance of work, usually because (in a chemical reaction) it has been used to increase the random motion of the atoms or molecules in the system; thus, entropy is a measure of randomness or disorder. Entropy occurs in the Gi...
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Organic chemistry is the study of the chemical reactions and molecules that contain carbon. Carbon is an important molecule in chemistry because it can make four bonds and is a major element of living things. Answer and Explanation:1 Resonance occurs when there are multiple valid configurations for...
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Re:What is the definition of chemical shift? « Reply #2 on: May 22, 2005, 01:50:52 PM » Quote Resonance lines upfield from SiMe4 have positive, and resonance lines downfield from SiMe4 have negative, d-values. It means the sign of chemical shift on left hand side is negavite...
What is meant by the term ion? In chemistry, what does Keq mean? What does the term "resonance" mean in regards to chemistry? In chemistry, what does "aq" mean? In chemistry what is the meaning of the term pure substance? Describe about the different types of protons are prese...
RESONANCE ENGLISH-P-BLOCK ELEMENT (BORON AND CARBON FAMILY)-PART - III : OLYMPIAD PROBLEMS (PREVIOUS YEARS) STAGE - V (INTERNATIONAL CHEMISTRY OLYMPIAD (IChO)) Problem 3 What happens when: (write chemical equations only ) (a) Anhydrous AlCl... 02:12 Give examples of the silicate minerals ...
4-Dimethylaminopyridine (DMAP) is a derivative of pyridine with the chemical formula (CH3)2NC5H4N. This colourless solid is of interest because it is more basic than pyridine, owing to the resonance stabilisation from the NMe2 substituent. Chemical Properties DMAP (m.p. 112-113°C) and PPY...
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The article offers information on nuclear magnetic resonance (NMR). NMR was developed in 1945 by physicists Felix Bloch and Edward Purcell. It is being used to gather precise information on the nuclear properties of spin and magnetic moment. NMR is said to be the prime choice for the analysis...