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  2. LibreTexts - Wikipedia

    en.wikipedia.org/wiki/LibreTexts

    LibreTexts (formerly called STEMHyperlibrary [1] and ChemWiki [2]) is a 501(c)(3) nonprofit [3] online educational resource project. The project provides open access to its content on its website, and the site is built on the proprietary Mindtouch platform. [ 4 ]

  3. Wikipedia:The Wikipedia Library - Wikipedia

    en.wikipedia.org/wiki/Wikipedia:The_Wikipedia...

    The Wikipedia Library is an open research hub; a place for active Wikipedia editors to gain access to the vital reliable sources that they need to do their work and to be supported in using those resources to improve the encyclopedia. It can be accessed by any registered editor whose account is six months old and has 500 edits.

  4. Open-source software - Wikipedia

    en.wikipedia.org/wiki/Open-source_software

    This is an accepted version of this page This is the latest accepted revision, reviewed on 10 February 2025. Software licensed to ensure source code usage rights Open-source software shares similarities with free software and is part of the broader term free and open-source software. For broader coverage of this topic, see open-source-software movement. A screenshot of Manjaro Linux running ...

  5. Degrees of freedom (physics and chemistry) - Wikipedia

    en.wikipedia.org/wiki/Degrees_of_freedom_(physics...

    By the equipartition theorem, internal energy per mole of gas equals c v T, where T is absolute temperature and the specific heat at constant volume is c v = (f)(R/2). R = 8.314 J/(K mol) is the universal gas constant, and "f" is the number of thermodynamic (quadratic) degrees of freedom, counting the number of ways in which energy can occur.

  6. Ligand field theory - Wikipedia

    en.wikipedia.org/wiki/Ligand_field_theory

    Ligand field theory resulted from combining the principles laid out in molecular orbital theory and crystal field theory, which describe the loss of degeneracy of metal d orbitals in transition metal complexes.

  7. Organic synthesis - Wikipedia

    en.wikipedia.org/wiki/Organic_synthesis

    Organic synthesis is a branch of chemical synthesis concerned with the construction of organic compounds.Organic compounds are molecules consisting of combinations of covalently-linked hydrogen, carbon, oxygen, and nitrogen atoms.

  8. Koch's postulates - Wikipedia

    en.wikipedia.org/wiki/Koch's_postulates

    Robert Hermann Koch (11 December 1843 – 27 May 1910) was a German physician who developed Koch's postulates. [1]Koch's postulates (/ k ɒ x / KOKH) [2] are four criteria designed to establish a causal relationship between a microbe and a disease.

  9. Chemical reaction - Wikipedia

    en.wikipedia.org/wiki/Chemical_reaction

    A thermite reaction using iron(III) oxide. The sparks flying outwards are globules of molten iron trailing smoke in their wake. A chemical reaction is a process that leads to the chemical transformation of one set of chemical substances to another. [1]