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4.58. mg of an unknown protein are dissolved in enough solvent to make 5.00mL of solution. The osmotic pressure of this solution is measured to

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4.58. mg of an unknown protein are dissolved in enough solvent to make 5.00mL of solution. The osmotic pressure of this solution is measured to be 0.401 atm at 25.0C. Calculate the molar mass of the protein. Be sure your answer has the correct number of significant digits

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