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  2. List of unsolved problems in chemistry - Wikipedia

    en.wikipedia.org/wiki/List_of_unsolved_problems...

    This article needs attention from an expert in chemistry. The specific problem is: Incomplete list. WikiProject Chemistry may be able to help recruit an expert.

  3. List of important publications in chemistry - Wikipedia

    en.wikipedia.org/wiki/List_of_important...

    Description: This book explained Dalton's theory of atoms and its applications to chemistry. Importance: The book was one of the first to describe a modern atomic theory, a theory that lies at the basis of modern chemistry. [3]: 251 It is the first to introduce a table of atomic and molecular weights.

  4. Reaction quotient - Wikipedia

    en.wikipedia.org/wiki/Reaction_quotient

    In chemical thermodynamics, the reaction quotient (Q r or just Q) [1] is a dimensionless quantity that provides a measurement of the relative amounts of products and reactants present in a reaction mixture for a reaction with well-defined overall stoichiometry at a particular point in time.

  5. Alchemy - Wikipedia

    en.wikipedia.org/wiki/Alchemy

    A History of Chemistry. Volume 1, Part I. London: Macmillan. ISBN 978-0-333-03490-3. (the second part of volume 1 was never published; the other volumes deal with the modern period and are not relevant for alchemy) Pereira, Michela (2001). Arcana Sapienza: Storia dell'alchimia occidentale dalle origini a Jung. Rome: Carocci. ISBN 978-88-430-9647-3.

  6. Glossary of chemistry terms - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_chemistry_terms

    Also acid ionization constant or acidity constant. A quantitative measure of the strength of an acid in solution expressed as an equilibrium constant for a chemical dissociation reaction in the context of acid-base reactions. It is often given as its base-10 cologarithm, p K a. acid–base extraction A chemical reaction in which chemical species are separated from other acids and bases. acid ...

  7. AN/PYQ-10 - Wikipedia

    en.wikipedia.org/wiki/AN/PYQ-10

    An E-8 crew member entering data using an AN/PYQ-10 before a flight. The AN/PYQ-10 Simple Key Loader (SKL) is a ruggedized, portable, hand-held fill device, for securely receiving, storing, and transferring data between compatible cryptographic and communications equipment.

  8. Group 10 element - Wikipedia

    en.wikipedia.org/wiki/Group_10_element

    Group 10 elements are observed in oxidation states of +1 to +4. [2] The +2 oxidation state is common for nickel and palladium, while +2 and +4 are common for platinum. Oxidation states of -2 and -1 have also been observed for nickel [3] [4] and platinum, [5] and an oxidation state of +5 has been observed for palladium [6] and platinum. [7]

  9. History of science - Wikipedia

    en.wikipedia.org/wiki/History_of_science

    Part of a series on Science General History Literature Method Philosophy Branches Formal Natural Physical Life Social Applied In society Communication Community Education Funding Policy Pseudoscience Scientist Science portal Outline Category Article indexes Glossaries The history of science covers the development of science from ancient times to the present. It encompasses all three major ...

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