chemistry h/w help

posted by .

The concentration of lead nitrate (Pb(NO3 )2 ) in a 0.726 M solution is __________ molal. The density of the solution is 1.202
g/mL.

  • chemistry h/w help -

    M = moles/L
    0.726 means 0.726 moles/L.
    mass = volume x density
    mass = 1000 mL x 1.202 g/mL = 1202 grams.
    Convert 0.726 moles to grams and subtract that from 1202 g to find grams solvent then convert to kg solvent.
    Finally, m = moles/kg solvent.

  • chemistry h/w help -

    thanks i was able to solve it...

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Chemistry

    You made 100.0 ml of a lead (II) nitrate solution for lab but forgot to cap it. The next lab session you noticed that there was only 80.0 ml left. In addition, you forgot the initial concentration of the solution. You decide to take …
  2. CHEMISTRY

    A solution of H2SO4(aq) with a molal concentration of 1.94m has a density of 1.119g/mL. What is the molar concentration of this solution?
  3. Chemistry

    What is the boiling point of a 25.20% (m/v) KNO3 solution ?
  4. Chemistry

    Suppose we have a solution of lead nitrate, Pb(NO3). A solution of NaCl(aq) is added slowly until no further precipitation occurs. The precipitate is collected by filtration, dried and weighed. A total of 10.27g of PbCl2(s) is obtained …
  5. chemistry

    An aqueous solution of cobalt(II) nitrate has a concentration of 0.471 molal. The percent by mass of cobalt(II) nitrate in the solution is %.
  6. chemistry

    20.0 mL of a 2.2 M lead (II) nitrate solution is mixed with 100.0 mL of a 0.75 M magnesium sulfate solution. What is the concentration of nitrate ions in the resulting solution?
  7. chemistry

    You made 100.0 mL of a lead(II) nitrate solution for lab but forgot to cap it. The next lab session you noticed that there was only 84.8 mL left (the rest had evaporated). In addition, you forgot the initial concentration of the solution. …
  8. Chem

    You made 100.0 mL of a lead(II) nitrate solution for lab but forgot to cap it. The next lab session you noticed that there was only 80.7 mL left (the rest had evaporated). In addition, you forgot the initial concentration of the solution. …
  9. Chemistry

    We can precipitate out solid lead(II) iodide from an aqueous lead(II) nitrate solution by adding potassium iodide. If we have 500. mL of 0.632 M lead(II) nitrate solution and add excess potassium iodide, how much solid lead(II) iodide …
  10. Chemistry

    Excess lead (II) nitrate solution is added to 1.30 g of zinc powder and the mixture is stirred. When the reaction is finished the lead formed is filtered, dried and weighted. It has a mass of 3.31 g. What is the percentage yield of …

More Similar Questions