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Intensity on IR-spectrum

  1. Sep 19, 2006 #1
    In the above diagram, what does the % of transmittance means?
    I know the % of transmittance is the reverse of % absorption, but there are more C-H bond per molecule than C=O, why the intensity for C=O is higher(higher absorption)? I really have no clues!
  2. jcsd
  3. Oct 26, 2006 #2
    can anyone explain??
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