October 26, 2016

Homework Help: AP Chemistry

Posted by Anonymous on Sunday, November 15, 2009 at 8:54pm.

A sample of potassium nitrate (49g) is dissolved in 101g of water at 100C, with precautions taken to avoid evaporation of any water. The solution is cooled to 30C and no precipitate is observed. The solution is ________.

A. Hydrated
B. Supersaturated
C. Unsaturated
D. Placated
E. Saturated

I know the difference between the choices, but I don't know how to use that info to answer the question. Help please? Thanks!

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