How do we liquefy the gases ?
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Answer:
A gas can be liquified by increasing the presssure and decreasing the temperature of the gas.
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Explanation:
In general, gases can be liquefied by one of three methods: (1) by compressing the gas at temperatures less than its critical temperature; (2) by making the gas do some kind of work against an external force, which causes the gas to lose energy and change to the liquid state; and (3) by making gas do work against its
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