
7) Suppose David has isolated a protein subunit doing some research for Dr. Blackledge. A total of 0.165 g of this subu...
Dr. Ima Turkey isolated 3.500 mg of protein and dissolved it in 5.000mL of warer. She measured the osmotic pressure of the solution and found it to be 1.540 torr at 25.00 C. What is the molar mass of protein? 8453 8545 8554 8435
tert-Butyl alcohol is a solvent with a Kf of 9.10 °C/m and a freezing point of 25.5 °C.w liquid was dissolved in 11.6 g of tert-butyl alcohol, the solution froze at 15.3 °C.Which of t Tiquid? View Available Hint(s) ethylene glycol (molar mass = 62.07 g/mol) 1-octanol (molar mass = 130.22 g/mol) glycerol (molar mass = 92.09 g/mol) 2-pentanone (molar mass = 86.13 g/mol) 1-butanol (molar mass = 74.12 g/mol) A protein subunit from an enzyme is part of a...
A protein has been isolated as a salt with the formula Na20P (this notation means that there are 20 Na+ ions associated with a negatively charged protein P20−). The osmotic pressure of a 10.0 mL solution containing 0.265 g of the protein is 0.201 atm at 25.0°C. (a) Calculate the molar mass of the protein from these data. (b) Calculate the actual molar mass of the protein.
In order to determine the molar mass of an unknown protein, 368.7 mg of the protein is dissolved in enough water to give 50.00 mL of solution. The osmotic pressure of this solution is determined to be 2.94 mmHg at 298 K. Estimate the molar mass of this protein. Give an answer to the 100's. Do not include units in your response, only digits.
467. mg of an unknown protein are dissolved in enough solvent to make 5.00 mL of solution. The osmotic pressure of this solution is measured to be 0.0930 atm at 25.0 °C. Calculate the molar mass of the protein. Be sure your answer has the correct number of significant digits.
5. 1.024 g of an unknown molecular solid are dissolved in enough
water to produce 200.0 mL of solution. The osmotic pressure at 25C
is 278.0 torr. What is the molar mass of the solid?
6a. Calculate the van't Hoff factor of a 0.085M potassium
sulfate solution that has an osmotic pressure of 5.4atm at
25C
5. 1.024 g of an unknown molecular solid are dissolved in enough water to produce 200.0 ml. of solution. The osmotic pressure at 25...
5. 1.024 g of an unknown molecular solid are dissolved in enough water to produce 200.0 mL of solution. The osmotic pressure at 25°C is 278.0 torr. What is the molar mass of the solid? 1342.5 g/mol
3a. Calculate the molar mass (in g/mol) of an unknown 1:1 electrolyte if 0.482 g dissolved in 223.1 mL of water at 74.75 °C has an osmotic pressure of 54.4 mmHg. R = 0.082058 L⋅atm⋅mol−1⋅K−1. 1.00 atm = 760 mmHg. Report your answer to THREE significant figures. 3b. Calculate the required mass of an unknown nonelectrolyte (ℳ = 131.5599 g/mol) dissolved in 140.1 g of solvent that gives a solution that boils at 36.04 °C. The boiling point of the...
A 0.608 g sample of a protein was dissolved in 25.00 mL of water and the resulting osmotic pressure at 305 K was measured at 5.33 x 10-3 atm. What is the molar mass of this protein? 2.57 x 105 g/mol 7.95 x 104 g/mol 3.31 x 104 g/mol 1.14x 105 g/mol 1.47 x 106 g/mol Question 9 1 pts What is the predicted van't Hoff factor for FeBrz?
A 214 mL solution containing 23 g of a protein in toluene had an osmotic pressure of 0.053 atm at 27 oC. What is the molar mass (in g/mol) of the protein? Only enter a numerical value rounded to the nearest whole number in the answer box below. Do NOT type in the unit (g/mol). 2) An NaCl solution is prepared by dissolving 20.0 g NaCl in 150.0 g of water at 25°C. What is the vapor pressure of the...