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Science → Physical sciences → Chemistry → Chemical composition
ANSWERS: 4
  • Brian I
    By being subjected to very high pressure.
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  • lazerus1500
    by compression... or cooling it down a tremendous amount.
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  • Friend
    oxygen is a liquid at -218.79 °C and a gas at -182.95 °C
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  • nimmi
    Liquefaction of a gas occurs when its molecules are pushed closer together. The molecules of any gas are relatively far apart from each other, while the molecules of a liquid are relatively close together. Gas molecules can be squeezed together by one of two methods: by increasing the pressure on the gas or by lowering the temperature of the gas. In general, gases can be liquefied by one of three general 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, causing the gas to lose energy and change to the liquid state (3) by using the Joule-Thomson effect.
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