6. Calculate the polydispersity of the polymer sample in the colloid solution having 1:2:1 ratio of the number of moles of polymer chains of exact molecular weights 482.00, 2768.00, and 5308.00 g/mol respectively. A. 1.36 В. 1.26 С. 1.10 D. 1.06 Е. 1.03

synthetic ion exchange resins. These resins are organic polymeric networks that contain functional groups that are permanently attached to the resin. One such functional group is sulfonic acid, -SO3H. When placed in water, the resin (being a large organic molecule) will not dissolve. However, the ionic functional groups become hydrated and the resin will swell as it takes up waters of hydration. The resin may then be thought of as a solid solution mixture with the functional groups being "dissolved" but the polymer remaining as a solid. The hydronium ion (H3O+) associated with acidic functional groups like sulfonic acid will dissociate just as it would if the acid were free of the resin. If other cations such as Cu2+ or Na+ are added to the resin, an ion-exchange reaction can occur:  . Note that one H+ is released for each positive charge bound to the resin.  Since the resin exchanges a hydrogen ion for a sodium ion in this reaction, sulfonic acid resins are called cation-exchange…

At 25°C, the vapor in equilibrium with a solution containing carbon disulfide and acetonitrile has a total pressure of 247 torr and is 85.3 mole percent carbon disulfide. What is the mole fraction of carbon disulfide in the solution? At 25°C the vapor pressure of carbon disulfide is 361 torr. Assume that the solution and vapor exhibit ideal behavior.

Calculate the molal freezing point depression constant of Kf of X.