A solution containing 10.0g / L of urea (Molar mass 60.0 g/mol) is isotonic with 5.0%...
1.A solution that contains 15.581 grams of benzene (molar mass = 78.1 g/mol) in 420 g of cyclohexane freezes at a temperature 9.50 ºC below the freezing point of pure cyclohexane. Calculate the molar freezing point depression constant, Kf, for cyclohexane. 2. The molar boiling point elevation constant for water is 0.512 ºC/m. What is the boiling point of a solution containing 673 g of water and 78.0 g of CaCl2? 3. A solution containing 32.0 g of an unknown...
A sample of 2.00 g of the non-volatile compound urea, CO(NH2)2 (molar mass = 60 g/mol), is dissolved in 20.0 grams of water. What is the vapor pressure of water above this solution? The vapor pressure of pure water at the temperature of the experiment is 0.150 atm. a. 0.045 atm b. 0.010 atm c. 0.038 atm d. 0.146 atm e. 0.150 atm
A solution made by dissolving 85.0 g f sucrose (Molar mass. 342.3 g/mol) in 515 go acetic acid at 25 degree C froze at 14.95degreeC. Freezing point of the pure acetic acid is 16.90degreeC.Density of acetic acid is 1.05 g/ml. at 25 degree C. Answer the following and show your work in the space provided. Molality of sucrose solution = K_i of acetic acid = 93.42 g of an unknown non-volatile, non-electrolyte solute was dissolved in 850.g of acetic acid....
The molar mass of AB is 75.0 g/mol, the molar mass of AC is 60.0 g/mol, and the molar mass of B is 50.0 g/mol. What is the theoretical yield (in grams) of AC from the reaction of 28.0 g of AB?
What is the molar mass of urea if the freezing point of a solution containing 15g of urea in 100g of naphthalene is 64.5C? (freezing point of pure naphthalene is 80.6)
3) If a naked egg is isotonic to a solution containing 300 mOsmol/L (+/- 10%) complete the following table: Solution & Solute(s) Hypy/Hyper/Isotonic Shrink/Swell/Same Electrolyte or Non- electrolyte or both 5% glucose 0.1 M Na3PO4 Not Applicable Distilled Water Work for Question 3 Solution A: Solution B: Solution C:
A 49.5 ml solution containing 3.03 g of Na2CO3 (molar mass = 106 g/mol) and 50.5 ml solution containing excess Al(NO3)3 (molar mass = 213 g/mol) are mixed. What is the molecular formula of the insoluble product and how much of that product is formed? Al2(CO3)3; 2.23 g formed AICO; 1133 g formed Al2(CO3)3: 6.38 g formed Nag(NO3)63.03 g formed NaNO3;2.23 g formed NaNO3: 6.38 g formed
6. Complete the following table. Molar Mass of Mass of Substance Mass g/mol solute, g water ag Fructose 180 100 g Urea 150 g Lithium fluoride 25.9 2.5 g 164.1 Calcium nitrate 180 g Unknown compound 2.8 g 120 g (nonelectrolyte does not ionize) Expected freezing oint OC 1.32 1.62 -0.44 molality solution 0.14 0.48
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
A 1.000 L solution contains 0.5844 g NaCl (molar mass 58.44 g/mol) and 7.455 g KCl (molar mass 74.55 g/mol), both strong electrolytes. The concentration of Cl− ions in this solution is (A) 0.1000 mol/L (B) 0.1100 mol/L (C) 0.2000 mol/L (D) 1.000 mol/L (E) 1.100 mol/L