3. A 100. mL aqueous solution prepared by dissolving 25.0 g of a non-electrolyte solute had a freezing point of – 1.26 °C. What is the molar mass of the solute? Kf 1.86 °C/m

At 20°C, the vapor pressure of toluene is 0.0289 atm andthe vapor pressure of benzene is 0.0987 atm. Equal numbers of moles of toluene and benzene are mixed and forman ideal solution. Compute the mole fraction of benzenein the vapor in equilibrium with this solution.

Would like to learn how to solve these thanks. A solution made of toluene and benzene is prepared with a mole fraction of 0.7 fortoluene. If the vapor pressure of pure toluene is 70 torr, and the vapor pressure of purebenzene is 190 torr, what is the total ideal vapor pressure contributed by toluene in thissolution?A. 0.70 torrB. 49 torrC. 0.30 torrD. 1.0 torr A solution made of toluene and benzene is prepared with a mole fraction of 0.7 fortoluene. If the vapor pressure of pure toluene is 70 torr, and the vapor pressure of purebenzene is 190 torr, what is the total ideal vapor pressure of this solution?A. 57 torrB. 49 tortC. 0.30 torrD. 106 torr Table sugar granules were dissolved in a glass of water. The solid sugar granules haveno measurable vapor pressure, making water as the contributor to the entire vapor pressureof the resulting solution. If sugar was added to the glass of water until the water makes up amole fraction of 0.75 in the solution, what is the total vapor pressure of…

I want this example to find a value mole fraction and molality. Please help me. And thank you so much

When NaCl(s) is dissolved in a mixture of ice and liquid water, all originally at 0oC, the temperature of the mixture drop. Which does NOT occur in this process? A) Some of the ice melt; B) Heat flow from the liquid (solution) to the solid (ice); C) The freezing point of the solution is lowered; D) The chemical potential of the liquid water increases;

A batch of 500 ?? of ??? dissolves in water to form a saturated solution at 350 ? (77 °?) where the solubility is 30% by weight of ??? in water. The solution cools at 293 ? (20 °?) at which the solubility is 25.4% by weight. Determine the number of crystals obtained if 3.5% of the original water evaporates on cooling. Also, determine the capacity of the container in which this solution is cooled if it is 1.20 times the volume of the solution. The density of the solution is ???? ??/??

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

. Barium chloride has a freezing point of 962°C and afreezing-point depression constant of 108 K kg mol-1 . If12 g of an unknown substance dissolved in 562 g of barium chloride gives a solution with a freezing point of 937°C, compute the molar mass of the unknown, assuming no dissociation takes place.

The following question is on energetics and bonding. The diagram below represents some enthalpy changes in aqueous solution for sodium chloride.  Use symbols to indiicate the species present at A, B, & C on the diagram below.  Calculate the molar enthalpy of solution of sodium chloride  Predict, giving reasons whether the value for the enthalpy of hydration for sodium bromide will be the same, less than or greater than the value for sodium chloride.

takeAssignmentSessionLocator%3Dassignment-take Save an CHAPTER 13 - SOLUTIONS AND THEIR BEHAVIOR Study Progr O Previous Page 10 of 15 E Next Submit C References Use the References to access important values if needed for this question. The boiling point of diethyl ether, CH,CH,OCH,CH,, is 34.50°C at 1 atmosphere. A nonvolatile, nonelectrolyte that dissolves in diethyl ether is testosterone. A student dissolves 13.85 grams of testosterone, C,9H230, (288.4 g/mol), in 256.3 grams of diethyl ether. Use the table of boiling and freezing point constants to answer the questions below. Solvent Formula K, (°C/m) K; (°C/m) Water Но Cн,CH,OH CHCI3 CHs Diethyl ether CH,CH,OCH,CH3 0.512 1.86 Ethanol 1.22 1.99 Chloroform 3.67 Benzene 2.53 5.12 2.02 The molality of the solution is 234 m. The boiling point of the solution is 15 °C. //als-asp .cengage.info/als-asp/take Compag 6716 Cop