Author Question: A sample of potassium nitrate (49.0 g) is dissolved in 101 g of water at 100 C, with precautions ... (Read 49 times)

neverstopbelieb · **on:** Aug 27, 2018

A sample of potassium nitrate (49.0 g) is dissolved in 101 g of water at 100 C, with precautions taken to avoid evaporation of any water. The solution is cooled to 30.0 C and a small amount of precipitate is observed. This solution is ________.

A) hydrated
B) placated
C) saturated
D) unsaturated
E) supersaturated

Question 2

Which one of the following compounds contains the smallest percent oxygen by mass?

A) CO2
B) N2O4
C) P4O10
D) SO2