The primary method used to liquefy atmospheric gases involves alternate and successive stages of compression, cooling and decompression. Let's step through the process in a simple way to get a handle on it.
When we compress a gas, that gas is heated by the act of compression. If we put that heated gas through a heat exchanger with, say, water flowing around coils of piping through which the hot gas is passing, the gas will cool down. Next, we'll release the pressure on the gas, and this will cool the gas down even more. By then compressing the gas again, cooling it again, and then releasing the pressure, the released gas will be even colder. A repeated cycle will eventually result in drops of liquid air appearing when the pressure is released following a cooling and decompression cycle. This is a standard method of collecting atmospheric gas in liquid form. A link can be found below for further investigation.
Distillation can be used as a separation method.
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.
Nonreactive gases (or noble gases) are often used as a shielding gas to prevent atmospheric contamination, or as an insulator in high voltage circuitry. They are also often used to modulate wave frequencies for anything from light to radar to X-rays.
Hydrogen and helium have low boiling points, which are near absolute zero. Achieving temperatures this low is extremely challenging and energy-intensive, making it difficult to liquefy these gases. Additionally, at such low temperatures, the materials used to contain the gases would become brittle and may fail.
Insert gases, also known as shielding gases, are gases used in welding and other industrial processes to protect the weld area from atmospheric contamination. Common insert gases include argon, helium, and carbon dioxide, which help stabilize the arc and improve the quality of the weld. They prevent oxidation and other reactions that can weaken the weld joint. The choice of insert gas depends on the material being welded and the specific welding process used.
One method to liquify atmospheric gases is through a process called cryogenic liquefaction. This involves lowering the temperature of the gases to below their critical temperature, causing them to condense into liquid form. This process is commonly used in industry to produce liquid oxygen, nitrogen, and other gases.
By Linde method we can easily liquefy gas, first of all we have apparatus for performing experiment and then by its help we can do this. Two things required for such experiment "low temperature" and second "high pressure"; some gas are not be liquefied like hydrogen and helium because they have high kinetic energy, which means their temperature is increased when the kinetic energy of molecules increases so the distance between the molecules increase so its is impossible to convert them!
It depends on the specific method you are referring to. Some methods can be used for gases, while others are designed for liquids or solids. It's important to check the applicability of the method to gases before use.
barometer is used to measuring atmospheric pressure. manometer is used to measuring the pressure of gases.
Common gases used for welding include argon, helium, and carbon dioxide. These gases are often used as shielding gases to protect the weld area from atmospheric contamination and to help improve the quality of the weld. Oxygen and acetylene are also commonly used in oxy-fuel welding and cutting processes.
The method used to separate noble gases from air is fractional distillation. Air is cooled to very low temperatures to turn it into a liquid, and then the different components of air, including noble gases, are separated based on their boiling points.
Distillation can be used as a separation method.
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.
Atmospheric Fixation:the enormous energy of lightning breaks nitrogen molecules and enables their atoms to combine with oxygen in the air forming nitrogen oxides. These dissolve in rain, forming nitrates, that are carried to the earth. Atmospheric nitrogen fixation probably contributes some 5– 8% of the total nitrogen fixed.
The gases commonly used in welding are oxygen, acetylene, argon, and carbon dioxide. These gases play different roles in the welding process, such as providing heat, shielding the weld from atmospheric contamination, and facilitating the arc.
Nonreactive gases (or noble gases) are often used as a shielding gas to prevent atmospheric contamination, or as an insulator in high voltage circuitry. They are also often used to modulate wave frequencies for anything from light to radar to X-rays.
Hydrogen and helium have low boiling points, which are near absolute zero. Achieving temperatures this low is extremely challenging and energy-intensive, making it difficult to liquefy these gases. Additionally, at such low temperatures, the materials used to contain the gases would become brittle and may fail.