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Media in category "Ohio County, West Virginia" This category contains only the following file. S. File:Seal of Ohio County, West Virginia.png
Argon (18 Ar) has 26 known isotopes, from 29 Ar to 54 Ar, of which three are stable (36 Ar, 38 Ar, and 40 Ar). On the Earth, 40 Ar makes up 99.6% of natural argon. The longest-lived radioactive isotopes are 39 Ar with a half-life of 268 years, 42 Ar with a half-life of 32.9 years, and 37 Ar with a half-life of 35.04 days.
Ohio County is a county located in the Northern Panhandle of the U.S. state of West Virginia, and forms part of the Wheeling metropolitan area. As of the 2020 census , the population was 42,425. [ 1 ]
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Ar in Earth's atmosphere, which is only 31.5 ppmv (= 9340 ppmv × 0.337%), comparable with that of neon (18.18 ppmv) on Earth and with interplanetary gasses, measured by probes. The atmospheres of Mars, Mercury and Titan (the largest moon of Saturn) contain argon, predominantly as 40 Ar. [29] The predominance of radiogenic 40
Coal mining has been a primary industry of West Virginia since coal was first discovered in Boone County in 1742, by John Peter Salley. [3] The Hobet 21 mine itself was not opened until 1974. The mine was a small, family business under its original owners, Fil Nutter and Granville Lee Linville.
An Ohio county sheriff has spoken out again after telling residents to write down the addresses of homeowners with signs supporting Vice President Kamala Harris in their front yards.. Portage ...
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