Concentration Solutions

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%

Which solution is more diluted?

• Solution 1

• Solution 2

• They are equally diluted

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 volume of a 25% methyl solution that contains 20mL of methyl?

• 6.25mL

• 7.25mL

• 8.25mL

• 9.25mL

How many grams of glucose are needed to prepare 400mL of 5% glucose solution?

• 5g

• 10g

• 14g

• 20g