CO

(chemistry) The molecular formula for carbon monoxide.


NO

(chemistry) The molecular formula for nitric oxide.


KI

(chemistry) The molecular formula for potassium iodide.


NaCl

The chemical formula for sodium chloride, table salt.


A man may believe, for example, that the star in the sky is the Morning Star without believing that it is the Evening Star. A man may, for example, want to drink a glass of water without wanting to drink a glass of H₂O.

1992, John R. Searle, The Rediscovery of the Mind (in English), →ISBN, page 157:

(generally) Water (even if not chemically pure).


H₂O₂

(inorganic chemistry) The molecular formula for hydrogen peroxide.


HF

(chemistry) The molecular formula for hydrogen fluoride (hydrofluoric acid).


The molecular formula for hydrogen sulfide.


HCl

In addition, 0.5 ml of 1% lidocaine HCl was injected subcutaneously in the postauricular area for local anesthesia.

2015 August 27, “Intracochlear Bleeding Enhances Cochlear Fibrosis and Ossification: An Animal Study”, in PLOS ONE (in English), →DOI:

The molecular formula for hydrogen chloride (hydrochloric acid).


The molecular formula for carbonic acid.


(inorganic chemistry) The molecular formula for phosphoric acid.


(organic chemistry) The molecular formula for methane.


(inorganic chemistry) The molecular formula for ammonia.


H₂

(inorganic chemistry) The molecular formula for diatomic hydrogen.


nonstandard; acceptable when subscripts are not available or cannot be displayed


The molecular formula for sulfur dioxide.


The molecular formula for sulfur trioxide.


The molecular formula for nitrous oxide.


In dynamic equilibrium with N₂O₄ - dinitrogen tetroxide

molecular formula
molecular formula#English

nitrogen dioxide
nitrogen dioxide#English

The molecular formula for nitrogen dioxide.


DH

(inorganic chemistry) deuterium-protium, a type of hydrogen (H₂) molecule. Known as hydrogen deuteride.


(organic chemistry) Alternative spelling of CH₄


T₂

International Union of Pure and Applied Chemistry

(topology) The Hausdorff property; a category of topological spaces with this property.


KH

(chemistry) The molecular formula for potassium hydride.


A molecule of heavy water, comprising two deuterium atoms and an oxygen atom.


Opie, Iona, Opie, Pete (1959) chapter 9, in The Lore and Language of Schoolchildren, New York Review Books, published 2001, →ISBN, page 174: “Poor Old Stinker's dead and gone, / His face you'll see no more: / For what he thought was H₂O / Was H₂SO₄!”

(inorganic chemistry) the chemical formula of sulfuric acid


DHO

(inorganic chemistry) A molecule of semi-heavy water, comprising one deuterium and one protium type of hydrogen atoms with an oxygen atom


(organic chemistry) molecular formula for ethanoic acid, as acetic acid


C₂H₆

(organic chemistry) molecular formula for ethane


(inorganic chemistry) chemical formula for silicon dioxide


C₂H₄

(organic chemistry) molecular formula for ethene


C₂H₂

(organic chemistry) molecular formula for ethyne


(inorganic chemistry) The molecular formula for sulfurous acid.


(inorganic chemistry) the molecular formula for phosphorous acid.


(inorganic chemistry) The molecular formula of monosilane.


(inorganic chemistry) molecular formula for disilane

trisilyl

SiH₂SiH₂SiH₃, -SiH₂SiH₂SiH₃, SiH(SiH₃)₂, -SiH(SiH₃)₂, Si₃H₇, -Si₃H₇


D₂

Deuterium-deuterium, a type of hydrogen (H₂) molecule. In other words, dideuterium, or diatomic deuterium.


PbO

(inorganic chemistry) chemical formula for lead monoxide


HgS

(inorganic chemistry) chemical formula for mercuric sulfide


SiO

(inorganic chemistry) chemical formula for silicon monoxide


MgO

(inorganic chemistry) chemical formula for magnesium oxide


ZnO

(inorganic chemistry) The chemical formula for zinc oxide.


The modifier letter for the Chinese tone yīnrù.


The modifier letter for the Chinese tone yīnpíng.


The modifier letter for the Chinese tone yīnshǎng.


The modifier letter for the Chinese tone yīnqù.


The modifier letter for the Chinese tone yángpíng.


The modifier letter for the Chinese tone yángshǎng.


The modifier letter for the Chinese tone yángqù.


The modifier letter for the Chinese tone yángrù.


(chemistry) The molecular formula for tetrafluoromethane.


(chemistry) The molecular formula for tetrachloromethane.


C₃H₆

(organic chemistry) molecular formula for cyclopropane


titanium tetrabromide
titanium tetrabromide

(chemistry) molecular formula for titanium tetrabromide


(chemistry) The molecular formula for carbon trioxide.


SiC

The chemical formula for carborundum, also called silicon carbide.


SiH

(chemistry) The chemical compound of silylidyne.


C₄H₁₀

(chemistry) The chemical formula for butane.


C₆H₁₂

(chemistry) The chemical formula for cyclohexane.


C₁₄H₁₉NO₂

(chemistry) The chemical formula for dexmethylphenidate.

(chemistry) The chemical formula for methylphenidate.


NaBr

(chemistry) The chemical formula for sodium bromide.


The chemical formula of magnesium hydroxide.


MgH

magnesium monohydride
magnesium monohydride


formaldehyde monohydrate
formaldehyde monohydrate

formaldehyde hydrate
formaldehyde hydrate

methanediol, also called formaldehyde monohydrate, methylene glycol and formaldehyde hydrate


C₆H₁₀O₂

acetonylacetone, also called 2,5-hexanedione, hexane-2,5-dione, 1,2-diacetylethane, 'α','β'-diacetylethane, acetonyl acetone, diacetonyl, 2,5-dioxohexane, and 2,5-diketohexane


C₂

, [C₂]


HII

desc

English: H_(II) emission line, HII emission line, H-II emission line, H II emission line

English: H_(II) region, HII region, H-II region, H II region

(inorganic chemistry, spectroscopy) ionized hydrogen; an atomic hydrogen ion needing 1 electron to become neutral; a free hydrogen nucleus; a hydron