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Homework Help: Just a quick question

  1. Sep 8, 2010 #1
    1. The problem statement, all variables and given/known data
    A compound MF6 (the 6 being a subscript) contains 32.38% F by mass what is identity of M?

    2. Relevant equations
    What is identity of M?

    3. The attempt at a solution

    I really have no idea how to start...sorry. If someone can give me tips, on how to do it, that way I can learn. Thanks!
  2. jcsd
  3. Sep 8, 2010 #2


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    Gold Member

    What have you learned in Chem so far?

    Do you know what M, F and MF6 are?

    Here's a push in the right direction.

    I have one large fruit of unknown type and unknown mass, and six apples in my (massless) fruit basket.
    I know how much the apples mass individually, and I've been told that, together, they comprise 32.38% of the mass of my entire fruit basket.
    The remaining % of the fruit basket is going to be the mass of the mystery fruit.
    Last edited: Sep 8, 2010
  4. Sep 8, 2010 #3
    Wait I got 238.04 which would be Uranium right M=Uranium. If you can just verify this.
    Last edited: Sep 8, 2010
  5. Sep 8, 2010 #4


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    Gold Member

    Show your work.
  6. Sep 9, 2010 #5


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    Staff Emeritus
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    Homework Helper

    Moderator's note:

    Altami, please show your work if you wish to get help.
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