In the laboratory you dissolve 22.9 g of ammonium acetate in a volumetric flask and add water to a total volume of 375 mL.
What is the molarity of the solution?
In M.
What is the concentration of the ammonium cation?
In M.
What is the concentration of the acetate anion?
In M.

Which is a characteristic of mixtures?

Express the following number in scientific notation. 0.026890 =

6. using 3 – 4 sentences explain (in your own words) why water expands when it freezes? 7. using your knowledge of colligative properties explain whether sodium chloride or calcium chloride would be a more effective substance to melt the ice on a slick sidewalk. use 3 – 4 sentences in your explanation.