Strength of a Solution.  Dilute – low amount of solute dissolved in solvent  Concentrated – high amount of solute dissolved.

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Strength of a Solution

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

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

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

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

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

 Milligrams of solute per liter of solution

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

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

 Mass of solute/ mass of solution x 100

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

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

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