Concentration of Solutions

1. What mass, in grams, of sodium sulfate is needed to make 275 grams of a 1.5% aqueous solution of sodium sulfate? Answer 4.1 grams

2. What is the molar concentration of a barium chloride solution that is prepared by adding 20.0 ml of water to 50.0 ml of 10.0 M of barium chloride solution? Answer 7.14 M

3. What mass, in grams, of calcium nitrate are there in 867 ml of 2.00 M calcium nitrate solution? Answer 285 grams

4. Two sulfuric acid solutions are mixed as follows: 25.0 ml of 0.50 M sulfuric acid solution are added to 0.075 L of 0.25 M sulfuric acid solution. What is the molar is the molarity of the resulting mixture? Answer 0.32 M