Question

what is dry ice?How can it be converted into gas by changing pressure​

Answer 1

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what is dry ice?How can it be converted into gas by changing pressure

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Dry ice is solid. It sublimates or changes states from a solid to a gas at temperatures of -78 degrees Celsius under normal atmospheric pressure of 1 atm. Because of its low temperature at normal atmospheric pressure, it is useful as a coolant. When dry ice is placed into warm water, a cloud forms.

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Answer 2

Explanation:

Dry ice is the solid form of carbon dioxide. It is used primarily as a cooling agent. Its advantages include lower temperature than that of water ice and not leaving any residue. It is useful for preserving frozen foods where mechanical cooling is unavailable.

Solid CO2 gets converted into the gaseous state by decreasing the pressure to 1 atmosphere without coming into the liquid state. Hence, solid carbon dioxide is also known as dry ice.