Spectroscopy In the equation, A = ε bc, what quantity is represented by "ε"? Absorbtivity Molar absorbtivity None of these Path length Absorbtivity Molar absorbtivity None of these Path length ANSWER DOWNLOAD EXAMIANS APP
Spectroscopy Which of the following relationships between absorbance and %transmittance is incorrect? A = log10 1 / T A = 2 - log10 %T A = log10 100 / %T All are correct A = log10 1 / T A = 2 - log10 %T A = log10 100 / %T All are correct ANSWER DOWNLOAD EXAMIANS APP
Spectroscopy Why is it generally preferable to use absorbance as a measure of absorption rather than % transmittance? Because absorbance is proportional to the concentration of the analyte, whereas %T is not Because %T cannot be measured as accurately as absorbance Because %T is dependant on the power of the incident radiation None of these Because absorbance is proportional to the concentration of the analyte, whereas %T is not Because %T cannot be measured as accurately as absorbance Because %T is dependant on the power of the incident radiation None of these ANSWER DOWNLOAD EXAMIANS APP
Spectroscopy Why must the voltage supplied to a tungsten lamp be very stable? Because the lamp will only function at a specific voltage Because if it wasn't, the lamp would bum out All of these 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 Because if it wasn't, the lamp would bum out All of these Because amount of energy the lamp emits is proportional to the fourth power of the operating voltage ANSWER DOWNLOAD EXAMIANS APP
Spectroscopy Which of the following is not an IR vibrational mode? Rolling Rocking Stretching Scissoring Rolling Rocking Stretching Scissoring ANSWER DOWNLOAD EXAMIANS APP
Spectroscopy UV-Vis spectroscopy of organic compounds is usually concerned with which electronic transition(s)? n → π* and π → π* none of these n → σ* σ → σ* n → π* and π → π* none of these n → σ* σ → σ* ANSWER DOWNLOAD EXAMIANS APP
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