A flask of water is connected to a powerful vacuum pump
A flask of water is connected to a powerful vacuum pump. When the pump is turn on, the water begins to boil. After a few minutes, the same water begins to freeze. Eventually, it disappears. Define what happens at each step
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a flask of water is connected to a powerful vacuum pump when the pump is turn on the water begins to boil after a few
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A 2016 survey of undergraduate students considered this further and found that compared with students that did not use cannabis at least once
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