Guess the Sublimation Point of Liquid Nitrogen

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You can probably look up the subliming point (analogous to a boiling point) of dry ice, but if you want to try to guess consider the following game.

• At 0 ^oF, CO₂ is a gas. If it weren't, solid CO₂ would fall like snow any time the atmospheric temperature dropped below 0 ^oF.
• Absolute zero is the temperature reached by all substances if all heat were removed. If all heat were removed, there would be one and only one state of matter--a solid. Recall that one must add heat to convert a solid to a liquid and add more heat to convert to liquid to a gas. If you remove all heat, all substance would become solids! Dry ice could be as cold as -459 ^oF, but it could not be colder.

Pick a number between and ^oF. Be sure to include a sign on your guess.

Guess: ^oF. ; Feedback: than