Apr '14
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M Prep| MCAT Question of the Day Switch to MCAT2015


  • Q:

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    As water evaporates from a surface, the surface cools. This is because:


     

    A

    water is always at a lower temperature than the surface.

    B

    the water absorbs energy from the surface for its ΔHvaporization as it evaporates.

    C

    the presence of water vapor in the air keeps surfaces cool.

    D

    the concentration of various contaminants increases, increasing the boiling point of the water and requiring more energy from the surface to evaporate.



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