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tole034 tole034
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Posts: 25
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11 years ago
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
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wrote...
11 years ago
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.
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