1. Give the MW of oxygen gas to 4 significant figures.  From the periodic table, O = 16.00 MW = 2. Give the MW of oxygen gas to 4 significant figures.  From the periodic table, O = 16.00 what are the units ? MW =  a.  grams          b.  amu           c.  mol          d.  FU         e.  atoms         f.  no units

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