What is the molar m of Pepsin?

Pepsin is the principal digestive enzyme of gastric juice. A 1.50 g sample of pepsin is dissolved in enough water to make 5.00 mL of solution. The osmotic pressure of the solution is found to be 0.213 atm at 25�C. ume the enzymes are non-electrolytes. What is the molar m of pepsin? g/mol