Find the mass percentage of 10 g sodium hydroxide dissolved in 50 g of water.

a. 20%

b. 0.16%

c. 16.67%

A saline solution with a mass of 360 g has 36.5 g of NaCl dissolved in it. What is the mass percent concentration of the solution?

a. 10.14%

b. 9.86%

c. 9.21%

A solution is prepared by dissolving 90 mL of hydrogen peroxide in enough water to make 300 mL of solution. Identify the concentration of the hydrogen peroxide solution.


a. 0.30 %

b. 30%

c. 9.09%

What is the percent by volume of a solution formed by adding 15 L of acetone to 28 L of water?

a. 34.88%

b. 53.57%

c. 1. 86%

If 15 mL of alcohol is mixed with water to produce 150 mL of solution, what is the percentage by volume of the solution?

a. 9.09%

b. 10.00%

c. 11.09%