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Homework Help: Chemistry: Moles

  1. Apr 1, 2008 #1
    The questions is arranged like this:

    1.00 mol of oxygen molecules ? oxygen molecules

    I know an oxygen molecule is 02, so would it be 2 oxygen molecules?

    It's my first day learning moles, so I'm very lost about the 1.00 mol.
  2. jcsd
  3. Apr 1, 2008 #2
    A mole is equal to Avogadro's number in atoms/molecules. I don't think oxygen being diatomic plays a part in this since it's asking for the number of oxygen molecules.
  4. Apr 1, 2008 #3
    1 mol of O2 x 6.0221415 × 10^23 molecules / mol = number of oxygen molecules in a mole
  5. Apr 4, 2008 #4
    just think of "moles" as a quantifying unit

    in order of magnitude: (small to big)
    "one", "ten", "dozen", "hundred", "thousand", "million", "billion", "moles"

    1 dozen of something = 1 x 12 = 12 something
    1 moles of something = 1 x 6.022 x 10^23 = 6.022 x 10^23 something
  6. Apr 4, 2008 #5
    There would be two oxygen atoms per a diatomic oxygen molecule, but O2 by itself is a molecule, not a single atom.
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