Since density of water is 1g/cm3 , So in 326 ml,326g of water will be there.
Vapour pressure of pure water at 90 deg C= 525 torr
Let moles of urea be x.

How many grams of urea (gfw=60.0) must be added to 326 ml of water to make...
How many grams of sucrose (C12H22O11) must be added to 487 g of water to give a solution with a vapor pressure 0.871 mmHg less than that of pure water at 20°C? (The vapor pressure of water at 20°C is 17.5 mmHg.)
3a. How many grams of sucrose must be added to 430g of water to
lower the vapor pressure 1.4mmHg at 25C? The vapor pressure of
water at 25C is 233.8 mmHg and molar mass is 342.3 g/mol
3. Vapor pressure lowering a) How many grams of sucrose must be added to 430 R of water to lower the vapor pressure 1.4 mm Hg at 25 °C? The vapor pressure of water at 25°C is 23.8 mm Hg and the molar...
An aqueous solution is made by dissolving sodium chloride in 2.08 mL of water. The vapor pressure of the solution at 30 °C is 25.7 torr. The vapor pressure of pure water at this temperature is 31.8 torr. How many grams of sodium chloride were added to the water to make the solution? The density of water at 30 °C is 0.99567 g/cm3.
Enter your answer in the provided box. How many grams of sucrose (C12H22O11) must be added to 677 g of water to give a solution with a vapor pressure 0.787 mmHg less than that of pure water at 20°C? (The vapor pressure of water at 20°C is 17.5 mmHg.)
7. How many grams of chlorous acid must be dissolved in water to make 100 mL of a HClO2 solution whose pH is 2.40? Ka for HClO2 = 1.1 x 10-2. Molar mass of HClO2 = 68.5 g/mol.
3. Yapor pressure lowering a) How many grams of sucrose must be added to 430 g of water to lower the vapor pressure 1.4 mm Hg at 25 "C? The vapor pressure of water at 25 °C is 23.8 mm Hg, and the molar mass of sucrose is 342.3 g/mol. (5.1 x 10 g b) How many grams of NaCl must be added to the same amount of water as in part a) to lower the vapor pressure the same...
1. How much (in grams) urea CO(NH2)2 (nonelectrolyte) must be added in 250g of water to prepare a 0.50m solution? 2. What will be the freezing point of the solution above? Please provide detailed explanation.
How many grams of glucose must be dissolved in 300.0 ml of water at 25 degrees celsius to give an osmotic pressure of 9.05atm
a) The vapor pressure of pure water at 30°C is 31.8 torr. An aqueous solution of urea had a vapor pressure of 29.3 torrat the same temperature. What is the mole fraction of urea in the solution? b) How many grams of sucrose, C12H22O11(MW=342), must be dissolved in 552 g H2O (MW=18.016) to give a vapor pressure 2.0 torr lower than of pure H2O at 20°C? The VP of H2O at 20°C is 17.5 torr.
how many grams of My need to react to produce 210. mL of H2 collected over water at 25.0°C and a barometric pressure of 743 Torr. The vapor pressure of water at 25.0°C is 24 torr. Mg (s) + 2HCl => MgCl2 (aq) + H2 (g)