In a solution, 75.0 grams of MgCl2 (which is equal to 0.79 moles) is dissolved in 500g of solvent.

25. What is the mass of the solution in grams and in kilograms?

A. 500g = 0.5 kg B. 5750 0.575kg

C. 75g-0.075kg D. 79g-0.79kg

26. What is the concentration of the solution in terms of percentage by mass?

A. 13.04 % B. 0.13%

C. 13.73%

D. 15%

27. What is the concentration of the solution in terms of molality?

A. 0.00137 m

B. 1.30 m

C. 1.37m

D. 1.38m


An aqueous acetic acid solution which is 0.5L in volume, contains 300g of water and 3.33moles of solute.

28. If the total mass of the acetic acid solution is equal to 500g, what is the mass of the solute?

A. 300g

B. 200g

C. 0.5L

D. 0.2L

29. What is the molarity of the acetic acid solution? A. 1.65M

B. 0.66 M

C. 0.66m

D. 6.6 M

30. What is the percentage by volume of the solution if the solute is equal to 0.2L? A. 10%

B. 20%

C. 30%

D. 40%​