CONCENTRATION OF SOLUTIONS 1. Express the concentration of a solution (%w/w, %v/v and %w/v) containing 5g of NaCl and 50 ml of water (p of NaCl = 2.6 g/ml) %3D 2. Calculate the mass (in g) of magnesium chloride (MgCl,) that would be needed to prepare 150 mL of a 20% by mass aqueous solution of the salt. The density of the solution is 1.1g/mL. 3. Calculate the percent by mass of the solution containing 8.60g of salt in 95.0g of solution. 4. A solution is prepared by dissolving 20 ml of pure hydrogen peroxide (H,O2) in enough water to make 200 mL of solution. What is the concentration of the H,O, solution?
CONCENTRATION OF SOLUTIONS 1. Express the concentration of a solution (%w/w, %v/v and %w/v) containing 5g of NaCl and 50 ml of water (p of NaCl = 2.6 g/ml) %3D 2. Calculate the mass (in g) of magnesium chloride (MgCl,) that would be needed to prepare 150 mL of a 20% by mass aqueous solution of the salt. The density of the solution is 1.1g/mL. 3. Calculate the percent by mass of the solution containing 8.60g of salt in 95.0g of solution. 4. A solution is prepared by dissolving 20 ml of pure hydrogen peroxide (H,O2) in enough water to make 200 mL of solution. What is the concentration of the H,O, solution?
Chemistry
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Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Transcribed Image Text:CONCENTRATION OF SOLUTIONS
1. Express the concentration of a solution (%w/w, %v/v and %w/v)
containing 5g of NaCl and 50 ml of water (p of NaCl = 2.6 g/ml)
%3D
2. Calculate the mass (in g) of magnesium chloride (MgCl,) that
would be needed to prepare 150 mL of a 20% by mass aqueous
solution of the salt. The density of the solution is 1.1g/mL.
3. Calculate the percent by mass of the solution containing 8.60g
of salt in 95.0g of solution.
4. A solution is prepared by dissolving 20 ml of pure hydrogen
peroxide (H,O,) in enough water to make 200 mL of solution.
What is the concentration of the H,O, solution?
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