The osmotic pressure of an aqueous solution of a certain protein was measured to determine the protein’s molar mass. The solution contained 3.50 mg of protein dissolved in sufficient water to form 5.00 mL of solution. The osmotic pressure of the solution at 25 °C was found to be 1.54 torr. Treating the protein as a nonelectrolyte (The Van't Hoff Factor = 1), calculate its molar mass. R = 0.0821 L•atm• mol-1• K-1 (Note: Don't forget to convert your pressure to atmospheres and temperature to kelvin if you use this version of the gas constant.)

Chemistry: The Molecular Science
5th Edition
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
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Chapter13: The Chemistry Of Solutes And Solutions
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The osmotic pressure of an aqueous solution of a certain protein was measured to determine the protein’s molar mass. The solution contained 3.50 mg of protein dissolved in sufficient water to form 5.00 mL of solution. The osmotic pressure of the solution at 25 °C was found to be 1.54 torr. Treating the protein as a nonelectrolyte (The Van't Hoff Factor = 1), calculate its molar mass.

R = 0.0821 L•atm• mol-1• K-1

(Note: Don't forget to convert your pressure to atmospheres and temperature to kelvin if you use this version of the gas constant.)

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