AP Chemistry problem help please need badly?

Question

A 20.0mg sample of protien is dissolved in water to make 25.0ml of solution. The osmotic pressure of the solution is .56mmHg at 25C. What is the molar mass of proteien?

I really need help on this please guys

thanks

Answer 1

PI V = nRT where PI is the osmotic pressure.

Convert PI to atm, find number of moles, and that number of moles corresponds to 20.0mg.

That's all.

Answer 2

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