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Homework Help: Stoichiometry. Please help . Thanks

  1. Apr 8, 2009 #1
    stoichiometry. Please help . Thanks!!

    1. how many grams of Lead(II) Sulfide will result from the combination of 146.0 grams of ammonium sulfide and excess Lead (II) Nitrate



    2. Relevant equations



    3. ooohhhkkaayyy .
    I cannot even balance the equationn... sooo
    this is what i have
    2NH4S + Pb (NO3)2 -----> 2PbS + 2NH4 NO3
    I CANNOT FIGURE THIS OUT TO SAVE MY LIFEEE
     
  2. jcsd
  3. Apr 8, 2009 #2

    symbolipoint

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    Re: stoichiometry. Please help . Thanks!!

    If you understood the FeS problem from your other post (in which you gave a mostly reasonable solution and which was checked and improvement comments responded) then this one is the same idea. Look for the mole ratios from the written reaction, be sure to balance that reaction first; then use formula weights as needed according to the mole ratios.
     
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