Practice Exercise 12.25 g of the protein (molar mass = 235,000 g mol What is the...
The osmotic pressure of a solution containing 22.7 mg of an unknown protein in 50.0 mL of solution is 2.88 mm Hg at 25.0°C. Determine the molar mass of the protein. Select one: O a. 3.85 x 10 g/mol O b.3.85 g/mol O c. 2.46 x 10 g/mol O d. 1.47 x 10 g/mol e. 2.93 x 109 g/mol
A solution of 7.50 mg of a small protein in 5.00 mL aqueous solution has an osmotic pressure of 6.15 torr at 23 1degree C. What is the molar mass of the protein? g/mol
What is the vapor pressure for an aqueous sucrose (C12H22011) solution containing 34.2 g of sucrose and 180 g of water (H2O) at 25°C? Pº(H20) at 25°C 23.8 mm Hg Molar mass of 342 g/mol sucrose Molar mass of 18.0 g/mol water 23.8 mm Hg O 0.23 mm Hg 23.6 mm Hg 13.2 mmHg
What is the molar mass of a protein, if a solution of 0.12 g of the protein in 0.040 L of solution has an osmotic pressure of 0.76 torr at 35∘C?
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...
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.
Sugar is easily soluble in water and has a molar mass of 342.30 g/mol. What is the molar concentration of a 245.6 mL aqueous solution prepared with 78.3 g of sugar? Suppose you have 350.0 mL of a 0.450 M sodium hydroxide solution. How many moles of sodium hydroxide are in the solution? Calculate the percent by mass of a solution made from 17 g NaCl (the solute) and 67 g water. Suppose you need to prepare 141.5 mL of...
1. When 0.713 grams of a protein were dissolved in 72.5 mL of solution at 28.5 degrees C, the osmotic pressure was found to be 35.6 torr. Calculate the molar mass of the protein. 2. Calculate the molality of an aqueous solution that is 8.1% by mass calcium chloride. You might need to know that the density is 1.20 g/mL.
Let’s consider a solution of 100 g of glucose (with a molar mass of 180 g/mol) dissolved in 1 L of water. a) What is the osmotic pressure of the solution at 25˚C? b) At what temperature will the solution freeze?
Pepsin is an enzyme involved in the process of digestion. Its molar mass is about 3.50 × 104 g/mol. What is the osmotic pressure in mmHg at 30 °C of a 0.250-g sample of pepsin in 50.0 mL of an aqueous solution? mmHg