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Empirical formula of magnesium oxide

  1. Feb 5, 2009 #1
    1. The problem statement, all variables and given/known data
    i'm finding out the empirical formula of magnesium oxide for chem class.

    this is my data
    trial 1 trial 2
    1. mass of crucible, lid, and metal (g) 25.2 21.25
    2. mass of crucible, lid, and product (g) 25.4 21.23
    3. Mass of crucible and lid (g) 25.0 21.12

    Questions:
    1. calculate the mass of the magnesium metal and the mas of the product
    2. determine the mass of the oxygen consumed.
    3. calculate the number of moles of magnesium and the number of moles of oxygen in the prodcut.
    4. determine the empirical formula for magnesium oxide

    2. Relevant equations
    n/a

    3. The attempt at a solution
    1. 25.2-25.0=0.2 mass of magnesium

    2. 25.4-25.2= 0.2 oxygen

    1. The problem statement, all variables and given/known data

    no given data

    2. Relevant equations

    n/a

    3. The attempt at a solution
    n/a
     
    Last edited: Feb 5, 2009
  2. jcsd
  3. Feb 6, 2009 #2

    Borek

    User Avatar

    Staff: Mentor

    How many moles of magnesium were combined with how many moles with oxygen?
     
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