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Homework Help: Adding Concentrations

  1. Sep 20, 2009 #1
    1. The problem statement, all variables and given/known data

    http://carlodm.com/images/1.png [Broken]

    2. Relevant equations

    I tried using the formula: ( C1V1 + C2V2 ) / (V1 + V2)

    3. The attempt at a solution

    I keep on getting .0761 M. anything wrong with this? (YES I changed mL to L)
    Last edited by a moderator: May 4, 2017
  2. jcsd
  3. Sep 20, 2009 #2


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    The expression for the resulting formula looks good. Be aware that one formula unit of Na2SO4 , sodium sulfate, has two formula units of Na for each unit of compound.
  4. Sep 20, 2009 #3

    That solved my problem!!!!
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