Percent by Mass Solution Problems

Percent By Mass Solution Problems

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

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

3. A chemist dissolves 3.50 g of potassium iodate and 6.23 g of potassium hydroxide in 805.05 g of water. What is the percentage concentration of each solute in the solution?

4. 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?

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. What mass of cobalt(II) chloride would be needed tin order to make 650.0 mL of a 4.0% cobalt (II) chloride solution?

7. A saline solution is 0.9% NaCl. What mass of NaCl and water would be required to prepare 50 L of this saline solution?

8. What mass of H2SO4 is contained in 60.00 mL of 5.85 % solution of sulfuric acid?

9. How much water would you have to add to 2.402 kg of nickel(II) sulfate in order to make a 25% solution?

10. What mass of calcium chloride should be dissolved in 590.0 g of water in order to produce a 0.82 %