Chemistry

When 3.15 g of a nonelectrolyte solute is dissolved in water to make 135 mL of solution at 21 °C, the solution exerts an osmotic pressure of 869 torr.
What is the molar mass of the solute?
What is the molar concentration of the solution?
How many moles of solute are in the solution?

  1. 👍 0
  2. 👎 0
  3. 👁 357
asked by Tsomo
  1. pi = MRT
    pi = 869/760 = ?
    M solve for this
    R = 0.08205 L*atm/mol*k
    T = 273 + 21 = ?
    M gives you part b.
    Then M = mols/L solution, you know L solution and M, solve for mols and that is part c.
    Part a is mol = grams/molar mass. You know grams and mols, solve for molar mass.

    1. 👍 0
    2. 👎 0
    posted by DrBob222

Respond to this Question

First Name

Your Response

Similar Questions

  1. Chemistry

    When 3.10 g of a nonelectrolyte solute is dissolved in water to make 755 mL of solution at 26 °C, the solution exerts an osmotic pressure of 821 torr. What is the molar concentration of the solution? How many moles of solute are

    asked by LLamaboy on February 4, 2014
  2. Chem 2

    When 3.89 g of a nonelectrolyte solute is dissolved in water to make 835 mL of solution at 26 °C, the solution exerts an osmotic pressure of 825 torr. What is the molar concentration of the solution? How many moles of solute are

    asked by Bri on February 20, 2014
  3. science

    When 4.56 g of a nonelectrolyte solute is dissolved in water to make 275 mL of solution at 22 °C, the solution exerts an osmotic pressure of 873 torr.

    asked by eva on April 25, 2014
  4. Chem Two

    When 2.25 g of a nonelectrolyte solute is dissolved in 125 mL of water at 22 °C, the resulting solution exerts an osmotic pressure of 955 torr. What is the molar concentration of the solution? How many moles of solute are in the

    asked by Jen on July 14, 2012
  5. Chemistry

    When 4.54 g of a nonelectrolyte solute is dissolved in 565 mL of water at 29 °C, the resulting solution exerts an osmotic pressure of 835 torr. What is the molar concentration of the solution? How many moles of solute are in the

    asked by Jim on February 23, 2013
  6. Chemistry

    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

    asked by Josh on February 21, 2012
  7. Chemistry--Pretty simple question

    You dissolved a solute in some water to make a solution. If you had needed to know how much solute dissolved, how could you have determined this? I was just guessing of using a scale, but there must be some other way.

    asked by -Untamed- on September 29, 2011
  8. chemistry

    When 3.54 g of a nonelectrolyte solute is dissolved in 675 mL of water at 24 °C, the resulting solution exerts an osmotic pressure of 913 torr.

    asked by kitor on May 20, 2013
  9. chemistry

    A solute is added to water and a portion of the solute remains un-dissolved. When equilibrium between the dissolved and un-dissolved solute is reached, the solution must be

    asked by berta on May 22, 2013
  10. Chemistry

    When 4.65 g of a nonelectrolyte solute is dissolved in 475 mL of water at 27 °C, the resulting solution exerts an osmotic pressure of 931 torr. What is the molar concentration of the solution? How many moles of solute are in the

    asked by Anon on January 29, 2013

More Similar Questions