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  2. Gas constant - Wikipedia

    en.wikipedia.org/wiki/Gas_constant

    Using his extensive measurements of the properties of gases, [6] [7] Mendeleev also calculated it with high precision, within 0.3% of its modern value. [ 8 ] The gas constant occurs in the ideal gas law: P V = n R T = m R s p e c i f i c T {\displaystyle PV=nRT=mR_{\rm {specific}}T} where P is the absolute pressure , V is the volume of gas, n ...

  3. Van der Waals equation - Wikipedia

    en.wikipedia.org/wiki/Van_der_Waals_equation

    Here because is a multivalued function, the integral must be divided into 3 parts corresponding to the 3 real roots of the vdW equation in the form, (,) (this can be visualized most easily by imagining Fig. 1 rotated ); the result is a special case of material equilibrium. [68]

  4. Bridgman's thermodynamic equations - Wikipedia

    en.wikipedia.org/wiki/Bridgman's_thermodynamic...

    This method of rewriting the partial derivative was described by Bridgman (and also Lewis & Randall), and allows the use of the following collection of expressions to express many thermodynamic equations. For example from the equations below we have: = and =

  5. Stoichiometry - Wikipedia

    en.wikipedia.org/wiki/Stoichiometry

    324.41 g FeCl 3, 102.25 g H 2 S, 207.89 g Fe 2 S 3, 218.77 g HCl. Suppose 90.0 g of FeCl 3 reacts with 52.0 g of H 2 S. To find the limiting reagent and the mass of HCl produced by the reaction, we change the above amounts by a factor of 90/324.41 and obtain the following amounts: 90.00 g FeCl 3, 28.37 g H 2 S, 57.67 g Fe 2 S 3, 60.69 g HCl

  6. Horner's method - Wikipedia

    en.wikipedia.org/wiki/Horner's_method

    Horner's method can be used to convert between different positional numeral systems – in which case x is the base of the number system, and the a i coefficients are the digits of the base-x representation of a given number – and can also be used if x is a matrix, in which case the gain in computational efficiency is even greater.

  7. 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 ...

  8. SR 88 - Wikipedia

    en.wikipedia.org/wiki/SR_88

    Following the poor sales of the SAR 80, and with their involvement with the Sterling SAR-87, CIS came up with an improved design – the new SR 88.Many of the parts and mechanisms are similar to its predecessor.

  9. List of wars involving Denmark - Wikipedia

    en.wikipedia.org/wiki/List_of_wars_involving_Denmark

    This is a list of wars and war-like conflicts involving the modern Kingdom of Denmark and predecessor states. Danish victory Danish defeat Another result * *e.g. result unknown or indecisive/inconclusive, result of internal conflict inside Denmark, status quo ante bellum, or a treaty or peace without a clear result.