Spectroscopy
Which of the following will oscillate the fastest?

A small mass on a weak spring
A large mass on a stiff spring
A large mass on a weak spring
A small mass on a stiff spring

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Spectroscopy
Vibrational spectroscopy is

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

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Spectroscopy
In the past, IR spectra had to be aquired one wavelength at a time, which took a long time. Today quick spectra is due to the

the Fourier Transfer Algorithm allows us to scan all frequencies at once
light is faster today that it used to be
None of these
absence of broad spectrum of wavelenth

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

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