pi = MRT
You know pi, R, and T. Solve for M = mols/L.
Then you know M and L, solve for mols.
Finally, mols = grams/molar mass. You know mols and grams, solve for molar mass.
An aqueous solution containing 10.50 g of a compound in 100.0 ml of solution has
an osmotic pressure of 0.0187 atm. at 25°C. What is the molecular weight of the compound?
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