chemistry

Calculate the molarity of a solution in which 0.75 moles of a solute are dissolved in 125g of solution (density of solution = 1.05g/mL).

I did this much:
1.05 * 1L/1000mL = 0.001 L

I don't really know what to do.

  1. 👍 0
  2. 👎 0
  3. 👁 74
asked by Lisa
  1. What you did isn't much help. I don't understand it.
    molarity = mols/L of solution.
    you know mols. Use the density to convert 125 g solution to volume (liters) of solution.

    1. 👍 0
    2. 👎 0
    posted by DrBob222
  2. v = m/d
    v = 125g/1.05 g/mL
    v = 119.mL

    Then I converted mL to L
    119 mL x 0.001 L/1mL = 0.119 L

    Then,
    M = mol/L
    M = 0.75 mol/0.119 L
    Final answer: 6.3 mol/L

    1. 👍 0
    2. 👎 0
    posted by Lisa
  3. That's my answer, too.

    1. 👍 0
    2. 👎 0
    posted by DrBob222

Respond to this Question

First Name

Your Response

Similar Questions

  1. Chemistry

    An aqueous solution is 8.50% ammonium chloride, NH4Cl, by mass. The density of the solution is 1.024g/mL. Calculate the molality, mole fraction, and molarity of NH4Cl in the solution. I know the formulas needed but I'm not sure

    asked by S on January 24, 2012
  2. Chemsitry

    When 3.75 g of a nonelectrolyte solute is dissolved in 405 mL of water at 25 °C, the resulting solution exerts an osmotic pressure of 897 torr. What is molarity? I found molarity to be 0.048. What is the number of moles of

    asked by Anonymous on March 1, 2013
  3. chemistry

    What is the percent by mass of 3.55 g NaCl dissolved in 88 g H2O? 2. A solution is made by adding 1.23 moles of KCl to 1000.0 g of water. What is the % by mass of KCl in this solution? 3. If you have 100.0 mL of a 25% aqueous

    asked by Anonymous on February 10, 2011
  4. chemistry

    calculate the concentration of each solutions: 3 moles of solute dissolved in 2 liter of solution 6 moles of solute dissolved on 9 liters of solution 4 moles of solute dissolved in 3 liters of solution

    asked by jess on March 29, 2010
  5. Chemistry

    Calculate the molarity of a solution in which 0.75 moles of a solute are dissolved in 125g of solution (density of solution = 1.05g/mL). I don't even know where to begin.

    asked by Lisa on April 29, 2008
  6. chemistry

    2 questions, I'm Having trouble figuring out how to calculate the moles of a solute in a solution based on the molarity and the volume. Here is what I'm working with. 1) "Use molarity of the stock solution of aspirin/Fe(No3)3(aq)

    asked by Courtney on November 6, 2013
  7. chemistry

    What is the percent by mass of 3.55 g NaCl dissolved in 88 g H2O? 2. A solution is made by adding 1.23 moles of KCl to 1000.0 g of water. What is the % by mass of KCl in this solution? 3. If you have 100.0 mL of a 25% aqueous

    asked by Anonymous on February 10, 2011
  8. chemistry

    What is the percent by mass of 3.55 g NaCl dissolved in 88 g H2O? 2. A solution is made by adding 1.23 moles of KCl to 1000.0 g of water. What is the % by mass of KCl in this solution? 3. If you have 100.0 mL of a 25% aqueous

    asked by Anonymous on February 10, 2011
  9. Chemistry

    A solution is created by dissolving 13.0 grams of ammonium chloride in enough water to make 265 mL of solution. How many moles of ammonium chloride are present in the resulting solution? When thinking about the amount of solute

    asked by Onye on March 3, 2018
  10. Chem

    So I did a titration at school the other day and one of the questions is asking us to calculate the molarity of a solution but I don't know the # of moles of the solute. I know to calculate the molarity=# moles/ liters.

    asked by Anonymous on January 25, 2014

More Similar Questions