A 150 Mg Sample of a Protein Was Dissolved in Water

Multiple Choice

A 15.0 mg sample of a protein was dissolved in water to produce 5.00 mL of solution at 25.1°C. The osmotic pressure of this solution was measured and found to be 6.50 torr. What is the molar mass of this protein?

A) 427 g/mol
B) 941 g/mol
C) 8,580 g/mol
D) 4,270 g/mol
E) 561 g/mol