University of British Columbia
CHEM 211
nstructions: Answer the following six questions (pg. 1–4). DUE DATE: October 30, 11:59 pm. Submit all answers online through Canvas prior to the due date. Late submissions will receive a grade of zero. Total marks: 20 Question 1 [6 marks] Match the following terms with the definitions below. Input your answers on Canvas [each correct
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nstructions: Answer the following six questions (pg. 1–4). DUE DATE: October 30, 11:59 pm. Submit all answers online through Canvas prior to the due date. Late submissions will receive a grade of zero. Total marks: 20 Question 1 [6 marks] Match the following terms with the definitions below. Input your answers on Canvas [each correct answer is worth 0.25 marks]. Use definitions once only. Note: the terms and definitions will be randomized on Canvas. Terms Absorbance Absorption line width Atomic absorption spectroscopy Chromophore Deuterium lamp Diffraction grating Double beam design Double monochromator HOMO-LUMO Fluorescence Groove density Hollow cathode lamp Infrared light Molar absorption coefficient Pre-mix burner Photodiode array Photomultiplier tube Photoselection principle Quartz Resonance Rotational transitions Slit width Tungsten-halogen lamp Visible light Correct Definitions (in the same order as the columns of the list of terms) Log scale measurement of the amount of light transmitted through a sample. Important difference between molecular and atomic absorption spectroscopy. Method of elemental analysis. Group of atoms in a molecule where the electronic transition responsible for an absorption band is localized. Common spectrophotometer light source for ultraviolet wavelengths. Most common dispersive element used in monochromators. Spectrophotometer design that offers superior signal-to-noise ratio and precision. Arrangement of components that follows slit grating slit grating slit. Electronic transition in a molecule that corresponds to the S0 S1 transition. This study source was downloaded by 100000874405579 from CourseHero.com on 11-20-2023 14:52:35 GMT -06:00 https://www.coursehero.com/file/35660470/CHEM211-2018-Problem-Set3-Answer/ Mechanism through which a molecule loses some or all of its excitation energy (after photon absorption) via emission of a photon. Parameter that determines the dispersion of a diffraction grating. Common light source for atomic absorption spectroscopy. Light that induces vibration transitions in molecules. Measure of the probability that a molecule will absorb a photon of a certain wavelength. Sampling device for atomic absorption spectroscopy that is used with liquids. Detector technology that can be used to measure an absorption spectrum without scanning a monochromator. Type of amplified photodetector. Condition that the electric field or polarization of the photon should align with a transition dipole for a molecule to absorb that photon. Material used to construct sample cells suitable for measuring absorption of ultraviolet light. Condition for absorption of radiation wherein the energy of the photon matches the energy of the transition induced. Type of transitions that are generally omi
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