argon Density | enthalpy entropy | saturation temperature | pressure | specific heat capacity | viscosity | thermal conductivity and so on - eThermo Thermodynamics & Transport Properties Calculation

argon Thermodynamic & Transport Properties (Based on Venus model)

CAS number

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Category

Pure/Mixture

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Full Name

Chemical Formula

Synonym R-740 ,40Ar;Argon, isotope of mass 40; Argon-40; Khladon R 740; R 740

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argon : Introduction

Argon is a chemical element with symbol Ar and atomic number 18. It is in group 18 of the periodic table and is a noble gas. Argon is the third most common gas in the Earth's atmosphere, at 0.93% (9,300 ppm), making it approximately 23.7 times as abundant as the next most common atmospheric gas, carbon dioxide (390 ppm), and more than 500 times as abundant as the next most common noble gas, neon (18 ppm). Nearly all of this argon is radiogenic argon-40 derived from the decay of potassium-40 in the Earth's crust. In the universe, argon-36 is by far the most common argon isotope, being the preferred argon isotope produced by stellar nucleosynthesis in supernovas. In addition, argon is the most prevalent of the noble gases in Earth's crust, with the element composing 0.00015% of this crust