Why liquid nitrogen is called dry ice?
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Typically carbon dioxide is a gas at standard temperature and pressure, like air you breathe on the surface of the Earth. When forced under pressure and cold temperatures, carbon dioxide will undergo a phase transition and change from a gas to a solid. When that happens, that solid is what we call dry ice.
Dry ice changes back from a solid to a gas (skipping the liquid phase) at -109.3 degrees Fahrenheit. So, if you have some dry ice at room temperature with you (around 70 degrees Fahrenheit) it's sublimating back to gas. The smoke you will see as this happens is water vapor in the air cooled by this process.
Dry ice changes back from a solid to a gas (skipping the liquid phase) at -109.3 degrees Fahrenheit. So, if you have some dry ice at room temperature with you (around 70 degrees Fahrenheit) it's sublimating back to gas. The smoke you will see as this happens is water vapor in the air cooled by this process.
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