14. Urea (CONH2)2) is a nonelectrolyte. A 175.0 g aqueous solution at 21°C contains 8.57 % urea by weight. Density of this solution is 1.06 g/mL. a) Calculate the normal freezing point of the solution. b) Calculate the molarity of urea in the solution. c) Calculate the vapor pressure of the solution in mmHg. (Vapor pressure of water at 21°C is 18.7 mmHg). (Detailed solution is required. Show all steps in the solution. Each quantity must be expressed with units and with correct number of significant figures.)

41. Which aqueous solution has the greatest change in freezing point relative to pure water?  A) 0.5 M HC2H3O2 B) 0.4 M HCl C) 0. 3 M CaCl2 D) 0. 15 M AlCl3 E) They will all have the same change in freezing point.

Octane (C₈H₁₈)has a vapor pressure of 14.3 torr and a density of 0.703 g/mL. Benzene (C₆H₆) has a vapor pressure of 105.0 torr and a density of 0.876 g/mL. Calculate the vapor pressure (in torr) of a solution containing 655 mL of octane and 475 mL of benzene. Assume this solution behaves ideally.   (Do not provide solution in image and AI based).....

A solution is made using 16.7 percent by mass CH2Cl2 in CHCl3. At 30 °C, the vapor. pressure of pure CH2Cl2 is 490 mm Hg, and the vapor pressure of pure CHCl3 is 260 mm Hg. The normal boiling point of CHCl3 is 61.7 °C. What is the molality of CH2Cl2 in the solution?

Ethanol (C₂H₂OH) has a vapor pressure of 93.0 torr and a density of 0.785 g/mL. Pentane (C₂H₁₂) has a vapor pressure of 435.0 torr and a density of 0.626 g/mL. Calculate the vapor pressure (in torr) of a solution containing 495 mL of ethanol and 165 mL of pentane. Assume this solution behaves ideally.

a sodium hydroxide solution that contains 41.5 grams of NaOH per L of solution has density of 1.08 g/mL. Calculate the molality of the NaOH in this solution

A solution contains 0.166 moles of an unknown compound in 300 g of benzene. The Kf of benzene is 5.12 ° C/m and the normal freezing point of chloroform is -63.5°C. Calculate the freezing point of solution.

A 5.67 gram sample of a compound is dissolved in 250 grams of benzene. The freezing point of this solution is 1.02°C below that of pure benzene. What is the molar mass of this compound? (Note: Kf for benzene = 5.12°C/m.) Ignore significant figures for this problem. 4.52 g/mol А. 56.9 g/mol В. 114 g/mol С. 28.5 g/mol D. OE. 228 g/mol