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When 4.73 g of a nonelectrolyte solute is dissolved in 965 mL of water at 28 °C, the resulting solution exerts an osmotic pressure of 945 torr. What is the molar concentration of the solution? How many moles of solute are in the solution? What is the molar mass of the solute?

  • Chemistry -

    pi = MRT.
    Substitute pi in atm, R is 0.08206 and T in kelvin. Solve for M = molarity.
    b. moles = M x L
    c. mols = grams/molar mass. You know moles and grams, solve for molar mass.

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