(Solution) - A protein has been isolated as a salt with the -(2025 Original AI-Free Solution)

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A protein has been isolated as a salt with the formula Na20P (this notation means that there are 20 Na1 ions associated with a negatively charged protein P20-). The osmotic pressure of a 10.0-mL solution containing 0.225 g of the protein is 0.257 atm at 25.0°C.
(a) Calculate the molar mass of the protein from these data.
(b) Calculate the actual molar mass of the protein.