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  • Claus process/Definition
    A [[Catalyst|catalytic]] chemical process for converting gaseous hydrogen sulphide into elemental sulphur.
    142 bytes (16 words) - 09:23, 6 March 2024
  • Hycean world/Definition
    ...nclude>{{Subpages}}</noinclude>Water worlds, larger than Earth, with thick Hydrogen atmospheres, and oceans capable of supporting life
    138 bytes (18 words) - 08:53, 28 February 2022
  • Law of definite proportions
    ...ample of pure water, the mass ratio will always be 88.81% oxygen to 11.20% hydrogen. ...mic weights, the fixed atomic ratio of 2-to-1 means that the mass ratio of hydrogen-to-oxygen in any bulk sample of water will be the same.
    2 KB (342 words) - 19:45, 17 May 2010
  • Bohr radius/Definition
    Radius of the first Bohr orbit in the hydrogen atom.
    88 bytes (13 words) - 08:45, 29 August 2009
  • Tritium/Definition
    ...oactivity|radioactive]] [[isotope]] of the chemical [[elements|element]] [[hydrogen]] containing one [[proton]] and two [[neutron]]s.
    177 bytes (20 words) - 15:03, 7 December 2008
  • Deuterium/Definition
    An [[isotope]] of the chemical element [[hydrogen]] containing one [[proton]] and one [[neutron]].
    134 bytes (16 words) - 13:44, 7 July 2008
  • Hydrogen-like atom/Definition
    An [[atom]], excluding [[hydrogen]] itself, with only one electron, having charge +(Z-1), where Z = atomic nu
    150 bytes (19 words) - 11:34, 13 July 2008
  • Ammonia production/Definition
    The processes for the manufacture of hydrogen (H<sub>2</sub>) and ammonia (NH<sub>3)</sub>.
    127 bytes (18 words) - 20:30, 25 September 2008
  • Hydrophilic/Definition
    ...property of a molecule that can transiently bond with water (H2O) through hydrogen bonding.
    139 bytes (20 words) - 20:25, 3 September 2009
  • Very high temperature reactor/Definition
    ...a coolant, that might provide process heat for production of zero-carbon [[hydrogen]] from [[water]].<ref>https://www.gen-4.org/gif/jcms/c_9362/vhtr</ref>
    196 bytes (31 words) - 02:53, 7 April 2024
  • Hydrogen bond/Bibliography
    * George A. Jeffrey. ''An Introduction to Hydrogen Bonding (Topics in Physical Chemistry)''. Oxford University Press, USA (Mar * A New Intermolecular Interaction: Unconventional Hydrogen Bonds with Element-Hydride Bonds as Proton Acceptor Robert H. Crabtree, Per
    1 KB (144 words) - 06:45, 13 October 2008
  • Acid gas
    ...[[acidic]] substances such as gaseous [[carbon dioxide]] (CO<sub>2</sub>), hydrogen sulfide or [[mercaptan]]s (RSH). Thus, carbon dioxide by itself is an acid Before a raw natural gas containing hydrogen sulfide or carbon dioxide can be used, the raw gas must be treated to reduc
    2 KB (360 words) - 08:07, 15 March 2024
  • Sour gas
    ...]] byproduct [[gas]] or any other gas containing significant amounts of [[hydrogen sulphide]] (H<sub>2</sub>S). Natural gas is usually considered sour if the ...amounts of [[acidic]] gases such as [[carbon dioxide]] (CO<sub>2</sub>) or hydrogen sulfide. Thus, carbon dioxide by itself is an acid gas but it is not a sour
    3 KB (430 words) - 09:44, 6 March 2024
  • Sour gas/Definition
    ...refinery byproduct gas, or any other gas containing significant amounts of hydrogen sulfide (H<sub>2</sub>S).
    169 bytes (23 words) - 05:46, 3 March 2011
  • Cold fusion/Definition
    ...rgy nuclear reactions that occur in metals saturated with deuterium (heavy hydrogen); widely considered to be [[fringe science|fringe]] or [[pseudoscience]].
    200 bytes (24 words) - 18:19, 20 September 2008
  • Ammonia/Definition
    A [[chemical compound]] (NH<sub>3</sub>) of [[nitrogen]] and [[hydrogen]], occurring as a [[gas]] with a characteristic [[odour]] under [[standard
    196 bytes (24 words) - 09:18, 18 March 2010
  • Tritium/Periodic table of elements
    <includeonly></includeonly><noinclude>Tritium behaves almost exactly like hydrogen in most respects and is therefore difficult to classify as a metal or a non
    177 bytes (25 words) - 05:50, 6 March 2024
  • Deuterium/Elemental Class
    <includeonly></includeonly><noinclude>Deuterium behaves almost exactly like hydrogen in most respects and is therefore difficult to classify as a metal or a non
    179 bytes (25 words) - 06:55, 6 March 2024
  • Amine gas treating/Definition
    A process using aqueous solutions of [[amine]]s to remove [[hydrogen sulphide]] (H<sub>2</sub>S) and [[carbon dioxide]] (CO<sub>2</sub>) from [[
    187 bytes (28 words) - 09:37, 6 March 2024
  • Ammonia
    ...monia''' is a [[chemical compound]] (NH<sub>3</sub>) of [[nitrogen]] and [[hydrogen]], occurring as a [[gas]] with a characteristic [[odour]] under [[standard
    190 bytes (24 words) - 02:00, 13 January 2024
  • NGC 6523/Definition
    ...]], that appears to be surrounded by a much larger region of cold, neutral hydrogen.
    202 bytes (27 words) - 09:12, 1 October 2009
  • Gas balloon/Definition
    ...lled with a gas less dense than air or lighter than air (such as helium or hydrogen).
    166 bytes (28 words) - 23:45, 3 September 2009
  • Van der Waals molecule/Definition
    ...sting of two or more molecules held together by van der Waals forces or by hydrogen bonds.
    159 bytes (24 words) - 04:03, 29 April 2009
  • Aromatic hydrocarbons/Definition
    A molecule containing only carbon and hydrogen that exhibits unusual stability and reactivity from having a cyclic conjuga
    202 bytes (25 words) - 17:38, 2 November 2010
  • Elementary charge/Related Articles
    {{r|Hydrogen-like atom}} {{r|Hydrogen}}
    777 bytes (99 words) - 16:15, 11 January 2010
  • Mercaptan/Definition
    ...ompound that contains the functional group composed of a sulfur atom and a hydrogen atom (-SH).
    141 bytes (21 words) - 21:06, 3 September 2009
  • K-type star/Definition
    ...usually slightly cooler than our Sun and often orange in colour; includes hydrogen-burning 'main sequence' stars and older, giant stars such as Arcturus.
    203 bytes (29 words) - 10:53, 28 October 2011
  • Amino acid/Definition
    Biochemical with an amino group, a carboxyl group, a hydrogen atom, and a side chain bonded to a central carbon.
    148 bytes (23 words) - 20:58, 5 October 2009
  • Heat of combustion/External Links
    ..._heating_values.xls Lower and Higher Heating Values of Hydrogen and Fuels] Hydrogen Analysis Resource Center, [[U.S. Department of Energy]]
    971 bytes (148 words) - 23:47, 23 September 2008
  • Proton/Related Articles
    {{r|Hydrogen bond}} {{r|Hydrogen-like atom}}
    2 KB (218 words) - 12:57, 15 March 2024
  • Zyklon B/Definition
    ...iginally developed for killing insects and rats, a stable preparation of [[hydrogen cyanide]] that, with modifications, was the chemical used in the [[Auschwit
    241 bytes (31 words) - 21:26, 19 January 2011
  • Hydroxyl/Definition
    A molecule consisting of an oxygen atom and a hydrogen atom connected by a covalent bond (single bond).
    140 bytes (21 words) - 20:26, 3 September 2009
  • Monopropellant/Definition
    ...a [[rocket engine]] but sometimes in a [[turbine]], such as concentrated [[hydrogen peroxide]] passed over a catalyst that breaks it into steam
    249 bytes (36 words) - 20:24, 25 March 2010
  • Hydrogen sulphide/Definition
    A [[chemical compound]] with the [[chemical formula|formula]] [[Hydrogen|H]]<sub>2</sub>[[Sulphur|S]], which is a colorless, highly toxic, flammabl
    226 bytes (30 words) - 09:47, 6 March 2024
  • Hydrogen/Periodic table of elements
    <includeonly> </includeonly><noinclude>Hydrogen is in a class of its own, as in some instances it can behave like a metal a
    165 bytes (28 words) - 05:49, 6 March 2024
  • Zyklon B
    '''Zyklon B''' was a stabilized preparation of [[hydrogen cyanide]], originally developed for killing insects and rats, but, with mo The basic preparation, for commercial use, had the hydrogen cyanide adsorbed onto an inert substrate, along with a warning agent that w
    920 bytes (141 words) - 21:34, 19 January 2011
  • Alkalosis/Definition
    A haematological condition in which the reducing hydrogen ion concentration of arterial blood plasma (alkalemia), results in the pH o
    197 bytes (26 words) - 04:26, 30 September 2009
  • Hertzsprung-Russell diagram
    ...here most stars - all those in the phase where they shine from energy from Hydrogen fusion in there core, is called the "[[main sequence]]".]] ...gh [[Hydrogen fusion]] - the nuclear process where the nuclei of several [[Hydrogen]] atoms fuse to form an atom of [[Helium]]. Every star above the main sequ
    3 KB (519 words) - 12:22, 12 April 2022
  • Haber process/Definition
    ...mistry]] &mdash; from the [[chemical element|elements]] [[nitrogen]] and [[hydrogen]].
    258 bytes (31 words) - 08:37, 4 March 2010
  • Water/Definition
    A chemical compound with one oxygen and two hydrogen atoms (H<sub>2</sub>0). It is often in a liquid form and makes up the bulk
    214 bytes (36 words) - 03:50, 18 August 2009
  • Carbohydrate/Definition
    [[Organic compound]]s containing [[carbon]], [[hydrogen]], and [[oxygen]]; includes [[sugar]]s and [[starch]]es that provide [[ener
    280 bytes (38 words) - 07:50, 7 April 2010
  • Electron configuration/Related Articles
    {{r|Hydrogen-like atom}} {{r|Hydrogen}}
    1 KB (169 words) - 09:18, 6 March 2024
  • Organic chemistry/Definition
    ...ation (by synthesis or by other means) of chemical compounds of carbon and hydrogen, which may contain any number of other elements.
    253 bytes (35 words) - 17:12, 13 May 2008
  • Oxidation state
    ...[[LiH]], and oxygen has an oxidation state of -1 in [[peroxide]]s, e.g. [[Hydrogen Peroxide|H<sub>2</sub>O<sub>2</sub>]];
    1 KB (248 words) - 12:24, 3 April 2012
  • Chemical symbol
    Well-known examples of one-letter symbols are H for [[hydrogen]] and O for [[oxygen]]; For example, H<sup>+</sup> means a hydrogen ion, and Ca<sup>2+</sup> a calcium ion (with two electrons missing).
    3 KB (478 words) - 05:12, 23 October 2013
  • High Temperature Gas-cooled Reactor
    ...at with high core outlet temperatures which enables applications such as [[hydrogen production]] or process heat for the petrochemical industry or others. <ref ...ndustrial plants. Hydrogen generation is one of the major objectives, with hydrogen being seen as a petroleum alternative. Competitive reactors include the [[u
    2 KB (319 words) - 16:20, 8 January 2023
  • Schrödinger equation/Related Articles
    {{r|Hydrogen-like atom}} {{r|Hydrogen}}
    1 KB (143 words) - 10:13, 9 May 2011
  • Hydrogen bond/Definition
    ...nd|covalent]] and non-[[Ionic bond|ionic]] [[chemical bond]] involving a [[hydrogen]] [[atom]] and either [[Fluorine]], [[Nitrogen]], or [[Oxygen]].
    203 bytes (25 words) - 23:44, 16 July 2008
  • Tetramethylsilane/Definition
    ...pound]] with the [[chemical formula|formula]] [[Silicon|Si]]([[Carbon|C]][[Hydrogen|H]]<sub>3</sub>)<sub>4</sub>, used as a standard in <sup>1</sup>H and <sup
    308 bytes (45 words) - 06:39, 7 April 2010
  • Deuterium
    |elClass=Periodic table of elements{{!}}Like Hydrogen, Deuterium can behave as a Metal and a Non-Metal ...occurring isotope of hydrogen and represents 0.015% of naturally occurring hydrogen, with H-1 representing the remaining 99.985%.
    2 KB (287 words) - 05:42, 6 March 2024
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