What is the purpose of the gas argon in our atmosphere?
Answer:
Argon is the third most abundant gas in the atmosphere, after nitrogen and oxygen.
Argon is used to provide an inert atmosphere that will protect materials from reacting with oxygen or other gases.
For example, the inside of a light bulb is often filled with argon.
No matter how hot the filament inside the bulb gets, it will not react with argon.
Argon is also used in welding to prevent the two metals being heated from reacting with oxygen before they join to each other.
I use Argon in the laboratory when performing DC Sputtering - in has to be done in an 'inert' atmosphere and therefore argon is a good choice as it is extremely unreactive.
The argon is used in the chamber under a high vacuum (around 10^-4 mBar) and when the power is turned on to the magnetron, a plasma is formed (ionised gas) and the target material is sputtered onto a substrate (target material).
You can also read here for more, it has a variety of uses.
http://en.wikipedia.org/wiki/argon#appli...
arago is practically a noble gas which do no react with the others .
since its electrons are arrangened in a system of..18>atomic number...> 2,8,8. forming an octect.
it is found in te atmasphere as any other gas naturally formed when the earth did.
it only took a while to find this gas out
I am an organic analytical chemist and I use Argon in my gas chromatograph. Liquid hydrocarbons containing minute amounts of pesticides are heated up to around 200 degrees and require an inert gas to carry them through the instrument. The detector in my instrument is sensitive to compounds containing elements like chlorine or oxygen. If ordinary air was used, the oxygen would contaminate the analysis. In chromatographic terms, the Argon is known as my "mobile phase" and works to carry material through my instrument for analysis.
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