All of the following are TRUE for luminescence,except:
A) luminescence is emission of light from an excited state of a molecule.
B) luminescence is inherently more sensitive than absorption.
C) at low concentration,emission intensity is proportional to analyte concentration.
D) at high concentration,emission intensity decreases due to dilution.
E) light emitted from a chemical reaction is called chemiluminescence.
Correct Answer:
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Q1: Absorbance measured during a spectrophotometric titration must
Q2: Beer's law works for_ radiation passing through
Q3: Reagent blanks are primarily used to:
A)align the
Q5: Which of the following is NOT true
Q6: Fluorescence is:
A)a nonradiative transition between states
Q7: Phosphorescence is:
A)a nonradiative transition between states
Q8: Which of the following is NOT true
Q9: The basic spectrophotometer is composed of four
Q10: Which of the following are correct for
Q11: A 10.00 mL sample is titrated with
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