Percent Concentration of Solutions

What is the perecent by mass of a solution that contains 12.0 g of solute per 200.0 g solution?

• 5.6 %

• 6 %

• 2.4 %

How do we compute for percentage by volume?

• volume of solute divided by volume of solution then multiply by one hundred percent

• volume of solution divided by volume of solute then multiply by one hundred percent

• add volume of solute and solvent then multiply by one hundred percent

What mass of water should be added to 22.0 g of KCl to make 5.50% by mass solution?

• 400 g

• 25 g

• 0.25 g

What is the mass percent of 125 grams of fructose dissolved in 375 ml of water?

• 25.0%

• 5.5%

• 250%

Calculate the mass % concentration of 38.5 aqueous solution that contains 1.96 g of Nabr.

• 5.2%

• 5.09%

• 509%

What is the percentage concentration in the following solution given 2g sucrose in 80g water?

• 2.4%

• 2.5%

• 4.0%

• 97.6%

What is the percent by mass concentration of a solution that contains 6.0g of sugar dissolved in 20.7g of water?

• 21.21%

• 22.21%

• 22.47%

• 22.74%

A solution is prepared by mixing a 20g of sodium chloride in 80g of water. What are the concentrations of the solute and solvent in % by mass?

• Solute: 10% ; Solvent: 90%

• Solute: 20% ; Solvent: 80%

• Solute: 30% ; Solvent: 70%

• Solute: 40% ; Solvent: 60%

A solution of benzene and toluene was prepared by adding toluene to benzene until the total volume becomes 135mL. By volume, the solution is 30.0% benzene. How much benzene, in mL, is in the solution?

• 39.5mL of benzene

• 40.5mL of benzene

• 41.5mL of benzene

• 42.5mL of benzene

What is the percent by mass of a solution that contains 15.0 g of solute per 250.0 g solution?

• 5.0%

• 6.0%

• 7.5%

• 8.0%