Vollhardt,Chapter10

Vollhardt,Chapter10 - Chapter 10: 1. In characterizing a...

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Chapter 10: 1. In characterizing a molecule, what does elemental analysis yield? a. Molecular mass. b. Physical properties such as melting point. c. Gross chemical composition. d. Isomeric structure. Answer: C 2. Upon what does most sprectroscopy depend? a. A molecule’s structure and bond flexibility. b. A molecule’s ability to absorb electromagnetic radiation. c. A molecule’s size, steric hindrance, and ability to flex at certain frequencies. d. A molecule’s ability to generate electromagnetic radaition. Answer: B 3. In hydrogen nuclear magnetic resonance spectroscopy, what part of a molecule is induced to spin in a certain manner? a. Hydrogen nuclei in the molecule. b. Carbon electrons in the molecule. c. Hydrogen electrons in the molecule. d. Carbon nuclei in the molecule. Answer: A 4. Why must an NMR tube be spun to obtain a correct NMR spectrum? a. Because the sample must have a uniform thickness. b.
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This note was uploaded on 02/17/2010 for the course CHEM 3A taught by Professor Frechet during the Spring '10 term at UC Davis.

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Vollhardt,Chapter10 - Chapter 10: 1. In characterizing a...

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