Multiple Choice
Which of the following is NOT true for the absorption of light?
A) Transmittance is the fraction of incident light that is not absorbed.
B) Molecules that absorb light are promoted to an excited state.
C) A = −log(T)
D) Molecules that emit light return to the ground state.
E) Irradiance is the energy per second of the light beam.
Correct Answer:

Verified
Correct Answer:
Verified
Q13: Phosphorescence is:<br>A)a nonradiative transition between states with
Q14: The basic spectrophotometer is composed of four
Q15: Which of the following is TRUE for
Q16: The part of a spectrophotometer that selects
Q17: Absorbance measured during a spectrophotometric titration must
Q18: Fluorescence is:<br>A)a nonradiative transition between states with
Q19: Calculate the energy of a photon with
Q20: Reagent blanks are primarily used to:<br>A)align the
Q21: A 3.7 × 10<sup>−</sup><sup>4</sup> M solution of
Q23: A red laser emits a pulse of