Chem II

posted by .

Which of the follwoing gives the molarity of 17.0% by mass solution of sodium acetate (molar mass = 82.0 g/mol) in water. The density of the solution is 1.09 g/mL.

OK - I know that to figure molarity is moles divided by liters. This is confusing me because it is "17.0% by mass" I don't understand this. How much water are you using? I have a list of answers, but the answers won't do me any good if I don't know how I got there. HELP!!!

  • Chem II -

    assume you have one liter. Then the mass of the solution is 1090 grams. Seventeen percent of that is mass solute. The rest is water.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. ap chem

    a solution is prepared by dissolving 4.87 g of sodium dichromate in 25.0 ml of water. (d=1.00g/mL).calculate a. the mass percent of sodium dichromate in the solution. b. the mass percent o water in the solution. c the mole fraction …
  2. Chemistry II

    A solution of ethanol in water is prepared by dissolving 61.0 mL of ethanol (density = 0.79g/mL) in enough water to make 280.0 mL of solution. What is the molarity of the ethanol in this solution?
  3. chemistry

    What is the molarity of a solution of 10% by mass cadmium sulfate, CdSO4 (molar mass = 208.46 g/mol) by mass?
  4. chem 111

    What is the molarity of a solution of 10.0% by mass cadmium sulfate, CdSO4 (molar mass = 208.46 g/mol) by mass?
  5. chemistry

    A aqueous solution of acetic acid with a density of 1.25 g/ml is 30.0% by mass HC2h3O2 (MM=60.0) Compute the molarity of this solution. I figured out that if you divide 30.0 by the molar mass 60.0g which gives you .5 mol. I cannot …
  6. Chemistry

    Commercial bleach contains 5.25% (by mass) of NaClO in water. It has a density of 1.08 g/mL. Calculate the molarity of this solution. (Hints: assume you have 1 L of solution (mass 1080 g); molar mass of NaClO is 74.4 g/mol)
  7. chemistry

    A solution is prepared by mixing 5.00 grams of compound Z (molar mass 15.00 g/mol) in 100.0 ml of water. The density of the solution is 1.09 g/ml. Calculate the molarity of the solution
  8. chemistry

    1. 15.0 g of sodium sulfate are dissolved in water to form 400.0 g of solution. The density of the solution is 1.056 g/mL at 25oC. a. What is the mass percent (%(w/w)) of sodium sulfate?
  9. chem

    a.)How many moles of NaOH are required to prepare 2.00L od 0.380M solution?
  10. chem

    The molar mass of hydrogen fluoride, HF, is 20.0 g/mol. If 17.0 grams of HF are dissolved in water to give 200.0 mL of solution, what is the molarity of this solution?

More Similar Questions