Spectroscopy Which of the following relationships between absorbance and %transmittance is incorrect? A = 2 - log10 %T All are correct A = log10 100 / %T A = log10 1 / T A = 2 - log10 %T All are correct A = log10 100 / %T A = log10 1 / T ANSWER DOWNLOAD EXAMIANS APP
Spectroscopy A simple harmonic oscillator may absorb energy at anytime. when the frequencies match exactly when the amplitudes are the same. at no time. at anytime. when the frequencies match exactly when the amplitudes are the same. at no time. ANSWER DOWNLOAD EXAMIANS APP
Spectroscopy Which of the following components of a monochromator is the dispersing element? The collimating lens The diffraction grating The entrance slit None of these The collimating lens The diffraction grating The entrance slit None of these ANSWER DOWNLOAD EXAMIANS APP
Spectroscopy Where does a carbonyl (C=0) stretch appear in an IR spectrum? 160-110 3640-3250 1740-1720 1870-1650 160-110 3640-3250 1740-1720 1870-1650 ANSWER DOWNLOAD EXAMIANS APP
Spectroscopy Molar absorbtivity is the measure of the amount of light reflected and absorbed per unit concentration 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 None of these amount of light absorbed per unit concentration amount of light absorbed per unit length ANSWER DOWNLOAD EXAMIANS APP
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 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 ANSWER DOWNLOAD EXAMIANS APP
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