Spectroscopy
Beer's Law states that

absorbance is proportional to both the path length and concentration of the absorbing species
absorbance is proportional to the log of the concentration of the absorbing species
absorbance is equal to P0 / P
None of these

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Spectroscopy
Vibrational spectroscopy is

a flashlight through a prism and shake it
a class of spectroscopic techniques which analyzes molecular motions
an Infrared spectroscopy
a large mass on a weak spring

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