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How to go from density to molality

  1. Jun 8, 2009 #1
    1. The problem statement, all variables and given/known data
    hey guys just wondering how to do this.
    Lithium tetrafluoroborate (LiBF4) is sold as a 1.00 M solution in
    acetonitrile. If the solution has a density of 0.852 g/mL,
    the molality of the solution is?


    i tired using denisty=m/v and concentration=n/v but always had 2 variables. any help would be good. thanks
     
  2. jcsd
  3. Jun 8, 2009 #2

    Borek

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    Staff: Mentor

    1 L of your solution - what mass? What mass of LiBF4? What mass of solvent?
     
  4. Jun 8, 2009 #3
    umm, 852 grams/litre?
     
  5. Jun 8, 2009 #4

    Borek

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    Staff: Mentor

    Any doubts?
     
  6. Jun 8, 2009 #5
    i think it right but dunno what the next step is?
     
  7. Jun 8, 2009 #6

    Borek

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    Staff: Mentor

    Perhaps if you will read my very first post it will become clearer.
     
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