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This page was last edited on 12 November 2023, at 16:44 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply.
The term “industrial gases” [32] is sometimes narrowly defined as just the major gases sold, which are: nitrogen, oxygen, carbon dioxide, argon, hydrogen, acetylene and helium. [33] Many names are given to gases outside of this main list by the different industrial gas companies, but generally the gases fall into the categories "specialty ...
A Assuming an altitude of 194 metres above mean sea level (the worldwide median altitude of human habitation), an indoor temperature of 23 °C, a dewpoint of 9 °C (40.85% relative humidity), and 760 mmHg sea level–corrected barometric pressure (molar water vapor content = 1.16%).
Argon is a chemical element; it has symbol Ar and atomic number 18. It is in group 18 of the periodic table and is a noble gas. [10] Argon is the third most abundant ...
This is a list of prices of chemical elements. Listed here are mainly average market prices for bulk trade of commodities. Data on elements' abundance in Earth's crust is added for comparison. As of 2020, the most expensive non-synthetic element by both mass and volume is rhodium.
The content of 39 Ar in natural argon is measured to be of (8.0±0.6)×10 −16 g/g, or (1.01±0.08) Bq/kg of 36, 38, 40 Ar. [6] The content of 42 Ar (half-life 33 years) in the Earth's atmosphere is lower than 6×10 −21 parts per part of 36, 38, 40 Ar. [7] Many endeavors require argon depleted in the cosmogenic isotopes, known as depleted ...
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The prices of the noble gases are influenced by their natural abundance, with argon being the cheapest and xenon the most expensive. As an example, the adjacent table lists the 2004 prices in the United States for laboratory quantities of each gas.