CO - Wikipedia
https://en.wikipedia.org/wiki/CO
WEBMathematics. People. Places. Ranks and titles. Transportation. Other uses. See also. CO. Look up co, -co, c/o, care of, or co- in Wiktionary, the free dictionary. CO or variants may refer to: Chemistry. Carbon monoxide (CO), a colorless, odorless, and tasteless gas. Carbonyl group, composed of a carbon atom double-bonded to an oxygen atom: C=O.
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