Imagine that two 1-L beakers, A and B, each containing an aqueous solution of fructose (a nonvolatile sugar with molecular weight = 180) are placed together in a box, which is then sealed. (The concentrations of the solutions are not necessarily the same.) The temperature remains con- * stant at 26°C. Initially, there is 600 mL of solution in A and 100 mL of solution in B. As the solutions stand in the sealed box, their volumes change slowly for a while. When they stop changing, beaker A contains 400 mL and beaker B contains 300 mL. It is then determined that the solution in A is 1.5 m in fructose and has a density of .

(a) What is the molar concentration of fructose in the solution in beaker B at the end? Explain.

(b) Calculate the concentration of fructose in the solution in A at the start.

(c) Calculate the concentration of the fructose in the solution in B at the start.

(d) The vapor pressure of pure water at 26°C is 25.2 torr. What is the pressure of water vapor in the box at the end, after the volumes have stopped changing?                                          

1.10 g mL-1