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Spectroscopy

Spectroscopy
Which of the following is not an IR vibrational mode?

Rolling
Rocking
Stretching
Scissoring

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Spectroscopy
Molar absorbtivities of compounds exhibiting charge transfer absorption are

none of these
moderate
large
small

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Spectroscopy
Molar absorbtivity is the measure of the

None of these
amount of light absorbed per unit concentration
amount of light absorbed per unit length
amount of light reflected and absorbed per unit concentration

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Spectroscopy
A simple harmonic oscillator may absorb energy

at anytime.
at no time.
when the amplitudes are the same.
when the frequencies match exactly

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Spectroscopy
Which of the following will oscillate the fastest?

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

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Spectroscopy
Which of the following relationships between absorbance and %transmittance is incorrect?

A = log10 1 / T
A = 2 - log10 %T
All are correct
A = log10 100 / %T

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