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Covalent bonds in a molecule absorb radiation in the IR region and vibrate at characteristic frequencies. (a) A molecular vibration absorbs radiation of wavelength 169 pm. What frequency tin s-1) corresponds to that wavelength? Enter your answer in scientific notation. (b) A molecular vibration has a frequency of vibration of 9.204 x 1013 Hz. What wavelength (in pm) corresponds to that frequency?