Which condition(s) will increase the concentration of dissol…

Which condition(s) will increase the concentration of dissolved oxygen (O2) in water?                I.             decrease the temperature of the solution.                II.            increase the total external pressure on the solution by adding more N2 gas   Periodic Table and Datasheet

A 1.0 g sample of zinc sulfide, ZnS, is mixed with 100.0 mL…

A 1.0 g sample of zinc sulfide, ZnS, is mixed with 100.0 mL of pure water and 100.0 mL of a 0.100 M sodium sulfide, Na2S, solution. Which set of diagrams best represents the two solutions?   The Ksp of ZnS is 3.0×10–23, and both solutions are saturated.  Water molecules and sodium ions are omitted for clarity. Periodic Table and Datasheet