Argon atmospheric abundance

To a solution of Me2SiCl2 (30 mL, 254 mmol) in pentane (400 mL) under argon atmosphere, a solution of tert-Butylamine (107.7 mL, 1.016 mmol) in pentane (200 mL) is added dropwise at 0°C. Once the addition of the amine is completed, the ice bath is removed and the mixture is heated under reflux for 12 h. After the reaction mixture returns to room temperature, the abundant ammonium salts formed are filtered, and washed with pentane (2 X 250 mL). Pentane is removed by distillation at atmospheric pressure, and dimethyl(bis-rbutylamino) silane is obtained as a colorless oil by distillation under vacuum (80°C, 0.17 mmHg). Yield 42.3 g, (82%). 

Bogard D. D. and Garrison D. H. (1998). Relative abundances of argon, krypton, and xenon in the Martian atmosphere as measured in Martian meteorites. Geochimica et Cosmochimica Acta, 62(10) 1829-1835. 

Oxides are a common issue since they can make up to several percent of the metal beam, while compounds of argon and atmospheric gasses, such as ArN, are ubiquitous. The abundance... 

Argon is a colorless, odorless, tasteless, chemically inert noble gas that makes up about 0.93% of the Earths atmosphere. It is the third most abundant gas in the atmosphere, meaning it is more common than carbon dioxide, helium, methane, and hydrogen. 

Argon is the 56th most abundant element on Earth. It is the most abundant of all the noble gases found in the atmosphere. In fact, the only source of argon is the atmosphere, where it is found at just under 1% of air by volume. 

The element was discovered by Lord Raleigh and Sir William Ramsay in 1894. Argon is the third most abundant element in the atmosphere. Its concentration in air is 0.934% by volume. Also, it occurs in earth s crust at a concentration of 3.4 mg/kg, and in the sea water at 4.3 pg/L. It was most likely formed in earth crust by radioactive decay of K-40 and seeped out into the... 

Just as water bodies such as rivers, lakes, and the ocean can be considered enormous aqueous solutions, the atmosphere is a gigantic gaseous solution. The atmosphere is composed primarily of nitrogen, 78%, and oxygen, 21%. The third most abundant gas in the atmosphere is argon, which makes up about 0.9%. The remaining 0.1% consists of... 

All the Group 18 elements occur in the atmosphere as monatomic gases together they make up about 1% of its mass. Argon is the third most abundant gas in the atmosphere after nitrogen and oxygen (discounting... 

The first, second and third periods are short periods. There are two elements in the first period and eight elements in both the second and the third periods. The elements in the short periods constitute almost 97% of the earth s crust, oceans and atmosphere. Among these elements, helium (He) and neon (Ne) gases occur only in trace amounts in the atmosphere but argon (Ar) makes up about 1 % of the atmsophere. The other elements are abundant. 

Argon is an important element for nucleosynthesis, for the discovery and interpretation of isotopic anomalies, and for the interpretation of the origin of planetary atmospheres. Argon is the eleventh most abundant element in the universe thus it is an important datum for nucleosynthesis theories. It is much rarer in terrestrial abundances because most Ar was lostinto space (owing to its inertness and high volatility) as the Earth formed. 

Argon is the third mostabundant of the noble gases. From the isotopic decomposition of solar-wind Ar one finds that the mass-38 isotope,38 Ar, is the second mostabundant of Ar isotopes in the universe. In the Earth s atmosphere,40 Ar happens to be the most abundant owing to its peculiar origin on Earth as the daughter of radioactive 4°K. 3 Ar comprises 15.8% of all the Ar isotopes in the Sun. Using the total abundance of elemental Ar = 1.01 x lo5 per million silicon atoms in the Sun, this isotope has... 

The atmosphere is a well-mixed reservoir with known concentrations of noble gases (Table 13.1). These atmospheric noble gases have characteristic isotopic abundances that are given in Table 13.2. The solubility of the noble gases is given in Fig. 13.1, expressed in cc STP noble gas/cc water. STP stands for standard temperature (0°C) and pressure (760mmHg=l atmosphere). What is the solubility of argon in distilled water at sea level at 15 °C The answer, from Fig. 13.1, is 3.5 x 10 4cc STP Ar/cc water. 

Helium is the second most abundant element in the universe. In the Earth, it is continuously formed by radioactive decay, mostly of uranium and thorium. Its present concentration in the atmosphere is probably the equilibrium concentration between the amount being released from the Earth s crust and the amount of hehum escaping from the atmosphere into space. The atmosphere represents the major source for neon, argon, krypton, and xenon. They are produced as by-products during flactional distillation of liquid air. Radon is obtained from the radioactive decay of radium. 

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