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oxygen and then hydrogen

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Examples of gas changing into a liquid?

Condensation.


If air is compressed and cooled sufficiently it becomes a substance?

If air is compressed and cooled, the temperature of the air will become negative. Now depending on how much humidity there is in that air being compressed we might get some water droplets as it is being cooled. Carbon dioxide when compressed and cooled we get dry ice.


What happens when air molcules are cooled?

When air molecules are cooled, they lose kinetic energy and move more slowly, which causes them to come closer together. As they come closer together, the air density increases, leading to a decrease in volume. Eventually, if cooled sufficiently, the air molecules may condense into a liquid or solid form depending on the temperature and pressure.


How do you turn nitrogen from a gas to a liquid?

in general you need to two things: But Liquid Nitrogen is not made this way. 1st it needs to be cooled very cold. Then it needs to be compressed. The proccess usually does this both at the same time, Cooled Nitrogen is run through a compressor and then cooled agian, and then super cooled to create Liquid. It is produced using a proccess called fractional distilation of air resulting in Liquid Oxegen and Liquid Nitrogen.


What causes water vapor turn back into liquid?

Water vapor turns back into liquid through a process called condensation, which occurs when the air cools down and can no longer hold all of the water vapor it contains. This excess water vapor then forms tiny water droplets, leading to the formation of clouds or fog.