Expressing Concentration

Calculate the molarity of a solution containing 0.5 moles of solute in 2 liters of solution.

• 1 M

• 0.25 M

• 0.1 M

• 2.5 M

Determine the percent by mass of a solution that contains 25 grams of solute and 150 grams of solvent.

• 10%

• 50%

• 75%

• 14.29%

What is the molality of a solution that contains 30 grams of solute and 500 grams of solvent?

• 0.15 m

• 0.3 m

• 0.5 m

• 0.06 m

Calculate the parts per million (ppm) of a solution that contains 0.02 grams of solute in 5000 grams of solution.

• 0.0004 ppm

• 40 ppm

• 0.004 ppm

• 4 ppm

If a solution has a molarity of 0.25 M and a volume of 2 liters, how many moles of solute are present?

• 2.5 moles

• 0.025 moles

• 1.5 moles

• 0.5 moles

Find the percent by mass of a solution that contains 40 grams of solute and 300 grams of solvent.

• 11.76%

• 2.5%

• 25%

• 60%

What is the molality of a solution that contains 50 grams of solute and 1000 grams of solvent?

• 0.05 m

• 50 m

• 0.5 m

• 0.005 m

Determine the parts per million (ppm) of a solution that contains 0.05 grams of solute in 10000 grams of solution.

• 50 ppm

• 0.005 ppm

• 5 ppm

• 0.5 ppm

If a solution has a molarity of 0.5 M and a volume of 1 liter, how many moles of solute are present?

• 2 moles

• 1 mole

• 0.5 moles

• 0.05 moles

Calculate the percent by mass of a solution that contains 60 grams of solute and 200 grams of solvent.

• 35.5%

• 23.08%

• 50%

• 10.2%