Fractional distillation is used to separate noble gases and air, by first liquifying the air and allowing the individual gasses to evaporate out at their respective boiling temperatures.
Filtering is a good method to separate dust and other small particles from gases. Electrostatic precipitation is used in coal thermal power units.
Helium and argon are used as inert gases in welding.
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All noble gases - He, Ne, Ar, Kr, Xe - were used in lasers.
Noble gases are used to advantage in environments where corrosion or damage from electrical discharges might occur if the environments were filled with air.
Fractional distillation
Gases that are used everyday
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The Group 18 elements are called the noble gases or sometimes inert gases. Wikipedia has information on the noble gases, and a link is provided.
Noble gases have completely filled valence orbitals.
Filtering is a good method to separate dust and other small particles from gases. Electrostatic precipitation is used in coal thermal power units.
Helium and argon are used as inert gases in welding.
Noble gases are used, especially the elements neon and sometimes argon
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Argon and Helium are used as sheilding gases in welding.
fossil fuels