Spectroscopy Which of the following relationships between absorbance and %transmittance is incorrect? A = log10 1 / T All are correct A = log10 100 / %T A = 2 - log10 %T A = log10 1 / T All are correct A = log10 100 / %T A = 2 - log10 %T ANSWER DOWNLOAD EXAMIANS APP
Spectroscopy Why must the voltage supplied to a tungsten lamp be very stable? All of these Because if it wasn't, the lamp would bum out Because amount of energy the lamp emits is proportional to the fourth power of the operating voltage Because the lamp will only function at a specific voltage All of these Because if it wasn't, the lamp would bum out Because amount of energy the lamp emits is proportional to the fourth power of the operating voltage Because the lamp will only function at a specific voltage ANSWER DOWNLOAD EXAMIANS APP
Spectroscopy A simple harmonic oscillator may absorb energy at no time. 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. ANSWER DOWNLOAD EXAMIANS APP
Spectroscopy Molar absorbtivity is the measure of the 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 amount of light reflected and absorbed per unit concentration None of these amount of light absorbed per unit concentration ANSWER DOWNLOAD EXAMIANS APP
Spectroscopy Why is it generally preferable to use absorbance as a measure of absorption rather than % transmittance? 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 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 ANSWER DOWNLOAD EXAMIANS APP
Spectroscopy Where does a carbonyl (C=0) stretch appear in an IR spectrum? 1870-1650 3640-3250 160-110 1740-1720 1870-1650 3640-3250 160-110 1740-1720 ANSWER DOWNLOAD EXAMIANS APP
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