produced at 742 mmHg, and 23.8 "C? Calculate the molar mass of a vapor if its density is 7.135 g/L at 12.0°C and 743...
Calculate the vapor pressure of a solution made by dissolving 94.5 g of urea (molar mass= 60.06 g/mol) in 214.5 mL of water at 35°C (Hint: The vapor pressure of pure water at 35°C is given in the table below. Assume the density of the solution is 1.00 g/mL.) What is the magnitude of vapor-pressure lowering? mmHg
The vapor pressure of water at 25.0ºC is 23.8 torr. Determine the mass of glucose (molar mass = 180 g/mol) needed to add to 500.0 g of water to change the vapor pressure to 23.3 torr.
An aqueous CaCl2 solution has a vapor pressure of 80.2 mmHg at 50 ∘C. The vapor pressure of pure water at this temperature is 92.6 mmHg. What is the concentration of CaCl2 in mass percent? A hypothetical solution forms between a solid and a liquid. The values of the thermodynamic quantities involved in the process are shown in the following table. Action Enthalpy separation of solute 11.5 kJ/mol separation of solvent 21.8 kJ/mol formation of solute-solvent interactions -86.7 kJ/mol solute...
At 15 ◦C, the water vapor pressure is 12.79 mmHg. What is the maximum mass of water contained in 2.00·105 L of air at 15 ◦C? The molar mass of water is 18.015 g/mol, 1.00 atm = 760 mmHg, T(K) = T(◦C) + 273. (A) 49.26 kg (B) 2734 g (C) 2566 g (D) 151.8 g (E) 7.91 g
7. The vapor pressure of water at 25.0°C is 23.8 torr. Determine the mass of glucose (molar mass = 180 g/mol) needed to add to 500.0 g of water to change the vapor pressure to 23.3 torr. (20 points) Thyroxine, an important hormone that controls the rate of metabolism in the body, can be isolated from the thyroid gland. If 0.455 g of thyroxine is dissolved in 10.0 g of benzene, the freezing point of the solution is found to...
Calculate molarity of 10.00 g/L solution of the salt, if its molar mass is 100.0 g/mol and solution density D=1.100 g/mL.
If the density of an unknown gas is 1.95 g/L at STP what is the molar mass of the gas? (R = 0.0821 atmL/molek) A) 11.4 g/mol B) 22.4 g/mol C) 23.8 g/mol D) 43.7 g/mol E) 139 g/mol
The density of a gas is 1.25 g/L at STP. What is its molar mass? A) 22.4 g/mol B) 17.9 g/mol C) 28.0 g/mol D) 37.6 g/mol E) 41.6 g/mol please show work
I know that the answer is a but what are the steps?? 3. Calculate the vapor pressure at 20.0° C of a saturated solution of the nonvolatile solute urea CO(NH2)2, in methanol, CH3OH. The solubility is 17.0 g urea/100.0 mL methanol. The density of methanol is 0.792 g/mL and its vapor pressure at 20.0° C is 95.7 mmHg. [The molar mass of urea is 60.06 g/mol and for methanol is 32.04 g/mol] A) 85.9 mmHg B) 28.3 mmHg C) 24.7...
The density of a gas is 0.803 g/L at STP. What is its molar mass? PICK ONE A 22.4 g/mol B 27.9 g/mol C 18.0 g/mol D 24.1 g/mol E 26.7 g/mol