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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Spectroscopy
Beer's Law states that

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

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Spectroscopy
Why must the voltage supplied to a tungsten lamp be very stable?

Because if it wasn't, the lamp would bum out
Because the lamp will only function at a specific voltage
All of these
Because amount of energy the lamp emits is proportional to the fourth power of the operating voltage

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Spectroscopy
Why is it generally preferable to use absorbance as a measure of absorption rather than % transmittance?

Because %T is dependant on the power of the incident radiation
Because absorbance is proportional to the concentration of the analyte, whereas %T is not
Because %T cannot be measured as accurately as absorbance
None of these

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