chemical formula wikipedia - EAS

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  1. Chemical formula - Wikipedia

    https://en.wikipedia.org/wiki/Chemical_formula

    WebIn chemistry, the empirical formula of a chemical is a simple expression of the relative number of each type of atom or ratio of the elements in the compound. Empirical formulae are the standard for ionic compounds, such as CaCl 2, and for macromolecules, such as SiO 2.An empirical formula makes no reference to isomerism, structure, or absolute number …

  2. Structural formula - Wikipedia

    https://en.wikipedia.org/wiki/Structural_formula

    WebThe structural formula of a chemical compound is a graphic representation of the molecular structure (determined by structural chemistry methods), showing how the atoms are possibly arranged in the real three-dimensional space.The chemical bonding within the molecule is also shown, either explicitly or implicitly. Unlike other chemical formula

  3. International Chemical Identifier - Wikipedia

    https://en.wikipedia.org/wiki/International_Chemical_Identifier

    WebThe International Chemical Identifier (InChI / ˈ ɪ n tʃ iː / IN-chee or / ˈ ɪ ŋ k iː / ING-kee) is a textual identifier for chemical substances, designed to provide a standard way to encode molecular information and to facilitate the search for such information in databases and on the web.Initially developed by the International Union of Pure and Applied Chemistry …

  4. Glossary of chemical formulae - Wikipedia

    https://en.wikipedia.org/wiki/Glossary_of_chemical_formulae

    WebThis is a list of common chemical compounds with chemical formulae and CAS numbers, indexed by formula.This complements alternative listing at list of inorganic compounds.There is no complete list of chemical compounds since by nature the list would be infinite. Note: There are elements for which spellings may differ, such as …

  5. Empirical formula - Wikipedia

    https://en.wikipedia.org/wiki/Empirical_formula

    WebIn chemistry, the empirical formula of a chemical compound is the simplest whole number ratio of atoms present in a compound. A simple example of this concept is that the empirical formula of sulfur monoxide, or SO, would simply be SO, as is the empirical formula of disulfur dioxide, S 2 O 2.Thus, sulfur monoxide and disulfur dioxide, both compounds of …

  6. Chemical equation - Wikipedia

    https://en.wikipedia.org/wiki/Chemical_equation

    WebStructure. A chemical equation (see an example below) consists of a list of reactants (the starting substances) on the left-hand side, an arrow symbol, and a list of products (substances formed in the chemical reaction) on the right-hand side.Each substance is specified by its chemical formula, optionally preceded by a number called stoichiometric …

  7. IUPAC nomenclature of organic chemistry - Wikipedia

    https://en.wikipedia.org/wiki/IUPAC_nomenclature_of_organic_chemistry

    WebIn chemical nomenclature, the IUPAC nomenclature of organic chemistry is a method of naming organic chemical compounds as recommended by the International Union of Pure and Applied Chemistry (IUPAC). It is published in the Nomenclature of Organic Chemistry (informally called the Blue Book). Ideally, every possible organic compound should have …

  8. Sildenafil - Wikipedia

    https://en.wikipedia.org/wiki/Sildenafil

    WebSildenafil, sold under the brand name Viagra, among others, is a medication used to treat erectile dysfunction and pulmonary arterial hypertension. It is unclear if it is effective for treating sexual dysfunction in women. It is taken by mouth or by injection into a vein. Onset is typically within twenty minutes and lasts for about two hours.

  9. Dimethyl sulfoxide - Wikipedia

    https://en.wikipedia.org/wiki/Dimethyl_sulfoxide

    WebDimethyl sulfoxide (DMSO) is an organosulfur compound with the formula (CH 3) 2 S O.This colorless liquid is the sulfoxide most widely used commercially. It is an important polar aprotic solvent that dissolves both polar and nonpolar compounds and is miscible in a wide range of organic solvents as well as water. It has a relatively high boiling point. …

  10. Sucrose - Wikipedia

    https://en.wikipedia.org/wiki/Sucrose

    WebSucrose, a disaccharide, is a sugar composed of glucose and fructose subunits. It is produced naturally in plants and is the main constituent of white sugar.It has the molecular formula C 12 H 22 O 11.. For human consumption, sucrose is extracted and refined from either sugarcane or sugar beet. Sugar mills – typically located in tropical regions near …



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