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  2. Wikipedia : Manual of Style/Chemistry/Structure drawing

    en.wikipedia.org/.../Chemistry/Structure_drawing

    As usual, uploaded images must have a correct copyright tag: please add {} - this will add the text This image of a simple structural formula is ineligible for copyright and therefore in the public domain, because it consists entirely of information that is common property and contains no original authorship. Images released under “non ...

  3. Host–guest chemistry - Wikipedia

    en.wikipedia.org/wiki/Host–guest_chemistry

    There are several typical host molecules, such as, cyclodextrin, crown ether, et al. Crystal structure of a host–guest complex with a p-xylylenediammonium bound within a cucurbituril [3] A guest N 2 is bound within a host hydrogen-bonded capsule [4] "Host molecules" usually have "pore-like" structure that is able to capture a "guest molecules".

  4. Water cycle - Wikipedia

    en.wikipedia.org/wiki/Water_cycle

    The residence time of a reservoir within the hydrologic cycle is the average time a water molecule will spend in that reservoir (see table). It is a measure of the average age of the water in that reservoir. Groundwater can spend over 10,000 years beneath Earth's surface before leaving. [17] Particularly old groundwater is called fossil water ...

  5. Table of thermodynamic equations - Wikipedia

    en.wikipedia.org/wiki/Table_of_thermodynamic...

    (Common) symbol/s Defining equation SI unit Dimension Temperature gradient: No standard symbol K⋅m −1: ΘL −1: Thermal conduction rate, thermal current, thermal/heat flux, thermal power transfer P = / W ML 2 T −3: Thermal intensity I

  6. File:Hydrogeological map - symbol - storage reservoir for ...

    en.wikipedia.org/wiki/File:Hydrogeological_map...

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  7. Water - Wikipedia

    en.wikipedia.org/wiki/Water

    Water is an inorganic compound with the chemical formula H 2 O.It is a transparent, tasteless, odorless, [c] and nearly colorless chemical substance.It is the main constituent of Earth's hydrosphere and the fluids of all known living organisms (in which it acts as a solvent [20]).

  8. Carbon dioxide - Wikipedia

    en.wikipedia.org/wiki/Carbon_dioxide

    The symmetry of a carbon dioxide molecule is linear and centrosymmetric at its equilibrium geometry. The length of the carbon–oxygen bond in carbon dioxide is 116.3 pm, noticeably shorter than the roughly 140 pm length of a typical single C–O bond, and shorter than most other C–O multiply bonded functional groups such as carbonyls. [19]

  9. Hydroquinone - Wikipedia

    en.wikipedia.org/wiki/Hydroquinone

    The reservoir opens through a muscle-controlled valve onto a thick-walled reaction chamber. This chamber is lined with cells that secrete catalases and peroxidases . When the contents of the reservoir are forced into the reaction chamber, the catalases and peroxidases rapidly break down the hydrogen peroxide and catalyze the oxidation of the ...