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CHEM 141 Exam 2 2025 Questions and Answers

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CHEM 141 Exam 2 2025 Questions and Answers

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CHEM 141 Exam 2 2025 Questions and
Answers


Draw the VSEPR - --CORRECT ANSWER--

Ideal tetrahedral angle - --CORRECT ANSWER--109.5

What forbids dipole? - --CORRECT ANSWER--An inversion point, C with

different axes, mutiple reflection planes with different axes, improper n fold

Chrial Forbidden - --CORRECT ANSWER--If it has a reflection plane, inversion

center, or improper n fold

Mass Spectrometry - --CORRECT ANSWER--a technique that separates particles

according to their mass, lets us know formula and isotope prevalence

Raman Vibrational Spectroscopy - --CORRECT ANSWER--Measures frequency

of bonds, depends on bond strength and mass and the ratio of frequencies is

similar to bond order (N2 over O2 is 2/3, and N2 is a double bond when O2 is a

triple bond)

NMR - --CORRECT ANSWER--speed at which nuclei rotate when surrounded by

electrons, tells bond type and atomic connectivity




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