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Homework Help: Moles of unknown metal

  1. Jan 28, 2006 #1
    here's a question from my recent chem exam that i don't know how to approach:

    a sample of 0.600 mol of a metal M reacts completely with excess fluorine to form 46.8 g MF2

    a) how many moles of F are in the sample of the compound that forms?

    b) how many grams of M are in this sample of MF2?

    c) what element is represented by the symbol M?

    i started to try to write a balanced equation for this but i'm not sure if the coeffecients would be right...

    any help? thanks!
  2. jcsd
  3. Jan 28, 2006 #2
    the balanced equation is just going to be M + F2 -> MF2
  4. Jan 28, 2006 #3
    so there would be 1.2 mol of F in the compound right
  5. Jan 28, 2006 #4


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