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 absorbance is proportional to the concentration of the analyte, whereas %T is not Because %T is dependant on the power of the incident radiation Because %T cannot be measured as accurately as absorbance None of these Because absorbance is proportional to the concentration of the analyte, whereas %T is not Because %T is dependant on the power of the incident radiation ANSWER DOWNLOAD EXAMIANS APP
Spectroscopy UV-Vis spectroscopy of organic compounds is usually concerned with which electronic transition(s)? n → π* and π → π* σ → σ* n → σ* none of these n → π* and π → π* σ → σ* n → σ* none of these ANSWER DOWNLOAD EXAMIANS APP
Spectroscopy Which of the following will oscillate the fastest? A small mass on a weak spring A large mass on a weak spring A small mass on a stiff spring A large mass on a stiff spring A small mass on a weak spring A large mass on a weak spring A small mass on a stiff spring A large mass on a stiff spring ANSWER DOWNLOAD EXAMIANS APP
Spectroscopy Beer's Law states that None of these absorbance is proportional to both the path length and concentration of the absorbing species absorbance is proportional to the log of the concentration of the absorbing species absorbance is equal to P0 / P None of these absorbance is proportional to both the path length and concentration of the absorbing species absorbance is proportional to the log of the concentration of the absorbing species absorbance is equal to P0 / P ANSWER DOWNLOAD EXAMIANS APP
Spectroscopy In the equation, A = ε bc, what quantity is represented by "ε"? Path length None of these Absorbtivity Molar absorbtivity Path length None of these Absorbtivity Molar absorbtivity ANSWER DOWNLOAD EXAMIANS APP
Spectroscopy Which of the following relationships between absorbance and %transmittance is incorrect? A = log10 1 / T A = log10 100 / %T All are correct A = 2 - log10 %T A = log10 1 / T A = log10 100 / %T All are correct A = 2 - log10 %T ANSWER DOWNLOAD EXAMIANS APP
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