October 9, 2015

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 100°C, with precautions taken to avoid evaporation of any water. The solution is cooled to 30°C 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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