Sample

1. What is the percentage by mass of a solution made by dissolving 0.49 g of potassium sulfate in 12.70 g of water? 3.8%.

2. What is the percentage concentration of 75.0 g of ethanol dissolved in 500.0 g of water? 13.0% ethanol

3. A student wants to make a 5.00% solution of rubidium chloride using 0.377 g of the substance. What mass of water will be needed to make the solution? : 7.16 g H2O

4. What mass of lithium nitrate would have to be dissolved in 30.0 g of water in order to make an 18.0% solution? 6.59 g LiNO3

5. What mass of lithium nitrate would have to be dissolved in 30.0 g of water in order to make an 18.0% solution?

6.  10.00g BaCl2 is dissolved in 90.00g of water. The density of the solution is 1.09g/mL. Calculate the weight/volume percentage concentration of the solution.

7. What is the weight/volume percentage concentration of 250mL of aqueous sodium chloride solution containing 5g NaCl?

8. 2.0L of an aqueous solution of potassium chloride contains 45.0g of KCl. What is the weight/volume percentage concentration of this solution in g/100mL?

9. 15mL of an aqueous solution of sucrose contains 750mg sucrose. What is the weight/volume percentage concentration of this solution in g/100mL?

10. 186.4L of aqueous sodium hydroxide solution contains 1.15kg NaOH. What is the weight/volume percentage concentration of this solution in g/100mL?

11. What is the concentration in percent mass/volume of 150 mL of solution containing 30 g of solute?

12. What is the concentration by % m/v if 67 g are dissolved to make 1.2 L of solution?

13. What volume of a 40 % m/v solution contains 70 g of solute?

14. What amount of solute is dissolved to make 0.5 L of a 20 % m/v solution?

15. What amount of a 75 % m/v solution will be made if 50 g of solute are dissolved?

16. What is the concentration in % m/v if 0.55 kg of solute is dissolved to make 1.5 L of solution?

17. What is the percent by mass of 5.0 g of iron...