Ask Question
13 July, 04:58

Name and describe the phase change that occurs when solid carbon dioxide (dry ice) is placed in an open container at room temperature

+4
Answers (1)
  1. 13 July, 08:48
    0
    If you put a lump of solid carbon dioxide (dry ice) in a paper cup or

    on a paper plate on the kitchen counter, it gets smaller and smaller

    and finally it just disappears, but you never see a puddle around it

    like you would with regular ice!

    Carbon dioxide has no liquid phase when the pressure on it is less than

    about 5 times normal atmospheric pressure. So in the kind of pressure

    that we like to live in, dry ice goes straight to gas when it melts. That kind

    of behavior is called "sublimation", and we say that the dry ice "sublimes".

    Every substance has some pressure limit like that. For water, it's 0.006 of

    normal atmospheric pressure. At any pressure lower than that, liquid water

    can't exist, and an ice cube sublimes ... it melts directly into water vapor

    without a puddle.
Know the Answer?
Not Sure About the Answer?
Get an answer to your question ✅ “Name and describe the phase change that occurs when solid carbon dioxide (dry ice) is placed in an open container at room temperature ...” in 📙 Biology if there is no answer or all answers are wrong, use a search bar and try to find the answer among similar questions.
Search for Other Answers