Spectroscopy A simple harmonic oscillator may absorb energy when the frequencies match exactly at anytime. at no time. when the amplitudes are the same. when the frequencies match exactly at anytime. at no time. when the amplitudes are the same. ANSWER DOWNLOAD EXAMIANS APP
Spectroscopy Why must the voltage supplied to a tungsten lamp be very stable? Because amount of energy the lamp emits is proportional to the fourth power of the operating voltage Because if it wasn't, the lamp would bum out All of these Because the lamp will only function at a specific voltage Because amount of energy the lamp emits is proportional to the fourth power of the operating voltage Because if it wasn't, the lamp would bum out All of these Because the lamp will only function at a specific voltage ANSWER DOWNLOAD EXAMIANS APP
Spectroscopy In the equation, A = ε bc, what quantity is represented by "ε"? None of these Absorbtivity Path length Molar absorbtivity None of these Absorbtivity Path length Molar absorbtivity ANSWER DOWNLOAD EXAMIANS APP
Spectroscopy Which of the following relationships between absorbance and %transmittance is incorrect? 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 A = 2 - log10 %T 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 %T cannot be measured as accurately as absorbance Because absorbance is proportional to the concentration of the analyte, whereas %T is not None of these Because %T is dependant on the power of the incident radiation Because %T cannot be measured as accurately as absorbance Because absorbance is proportional to the concentration of the analyte, whereas %T is not None of these ANSWER DOWNLOAD EXAMIANS APP
Spectroscopy Beer's Law states that 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 absorbance is proportional to both the path length and concentration of the absorbing species ANSWER DOWNLOAD EXAMIANS APP
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