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Homework Help: Finding the molar mass of air

  1. Jul 16, 2010 #1
    1. The problem statement, all variables and given/known data

    How many moles of MgIn2S4 can be made from one gram each of Mg, In, and S? Atomic masses are given.

    2. Relevant equations
    Moles = mass/molecular mass

    3. The attempt at a solution

    I have found the moles of each entity.

    Mg - 0.04167 moles
    In - 0.00871 moles
    S - 0.03125 moles

    Do I find the moles of the compound mentioned by adding the moles I have found here or do I say that the mass of the strange compound I have here is 3 g and that the moles formed are 3/(32 + 24 + 114.8 = molar mass of MgIn2S4)?

    How do I proceed?
  2. jcsd
  3. Jul 16, 2010 #2
    I'm sorry for the misleading title of the thread. It should be finding the number of moles!
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