Spectroscopy Why must the voltage supplied to a tungsten lamp be very stable? 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 All of these ANSWER DOWNLOAD EXAMIANS APP
Spectroscopy Beer's Law states that absorbance is proportional to both the path length and concentration of the absorbing species absorbance is equal to P0 / P None of these 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 absorbance is equal to P0 / P None of these absorbance is proportional to the log of the concentration of the absorbing species ANSWER DOWNLOAD EXAMIANS APP
Spectroscopy Which of the following components of a monochromator is the dispersing element? The entrance slit The diffraction grating The collimating lens None of these The entrance slit The diffraction grating The collimating lens None of these ANSWER DOWNLOAD EXAMIANS APP
Spectroscopy Where does a carbonyl (C=0) stretch appear in an IR spectrum? 1870-1650 1740-1720 160-110 3640-3250 1870-1650 1740-1720 160-110 3640-3250 ANSWER DOWNLOAD EXAMIANS APP
Spectroscopy In the equation, A = ε bc, what quantity is represented by "ε"? Absorbtivity Path length None of these Molar absorbtivity Absorbtivity Path length None of these Molar absorbtivity ANSWER DOWNLOAD EXAMIANS APP
Spectroscopy Why is it generally preferable to use absorbance as a measure of absorption rather than % transmittance? 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 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 ANSWER DOWNLOAD EXAMIANS APP
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