Question

1. A 1.189 g sample contains only vitamin C (C6H8O6) and sucralose (C12H19Cl3O8). When the sample is dissolved in water to a total volume of 39.0 mL, the osmotic pressure of the solution is 3.57 atm at 297 K. What is the mass percent of vitamin C and sucralose in the sample?

vitamin C: %

sucralose: %

2. A chemist combined chloroform (CHCl3) and acetone (C3H6O) to create a solution where the mole fraction of chloroform, χchloroform,χchloroform, is 0.187 The densities of chloroform and acetone are 1.48 g/mL and 0.791 g/mL, respectively.

Calculate the molarity of the solution.

molarity: MM

Calculate the molality of the solution.

molality: m

Answer 1