0.15 g sample of a purified protein is dissolved in water to give 2.0 mL of solution.

0.15 g sample of a purified protein is dissolved in water to give 2.0 mL of solution.
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0.15 g sample of a purified protein is dissolved in water to give 2.0 mL of solution. The osmotic pressure is found to be 18.6 torr at 25C. Calculate the molar mass of the protein.