What is dry ice?how it is prepaired and why carbon dioxide is a gas?
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Dry ice starts off life as carbon dioxide gas(CO2). From a gas, the CO2 needs to be converted into a liquid before it can become solid dry ice. In order to get the CO2 gas into a liquid, it is pressurized and refrigerated. ... As the CO2 vaporizes it causes a rapid decrease in temperature.
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liquid nitrogen is known as dry ice
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