1. Strength of a Solution

2.  Dilute – low amount of solute dissolved in solvent  Concentrated – high amount of solute dissolved

3.  One way to measure concentration  Grams of solute per Liter of solution

4.  What is the concentration (in g/L) of a solution composed of 45g of KCl dissolved to form 1.5L of solution?

5.  How many grams of NaOH are dissolved in 500ml of solution with a concentration of 0.75 g/L?

6.  What volume of water is needed to form a 0.25 g/L solution if you start with 15g of CuS?

7.  Milligrams of solute per liter of solution

8.  What is the concentration (in ppm) of a solution made by dissolving 15g of MgO in 250ml of water?

9.  How many grams of CaCl 2 are needed to form 200ml of a 25ppm solution?

10.  Mass of solute/ mass of solution x 100

11.  Find the % by mass is 25g of NaCl is dissolved in 150g of water.

12.  What mass of water is needed to form a 15% solution starting with 20g KCl?

13.  What mass of SrO must be dissolved in 500g of water to form a 11% solution?