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Past Exam for CHEM 135 - GEN CHEM FOR ENGINEERS with DeVoe at Maryland (UMD)

Exam Information

Material Type:Exam 3
Professor:DeVoe
Class:CHEM 135 - GEN CHEM FOR ENGINEERS
Subject:Chemistry
University:University of Maryland
Term:Fall 2000
Keywords:
  • Sigma Bonds
  • Nonelectrolyte
  • Hypothetical
  • Temperature
  • Final Answers
  • Sp3 Hybridization
  • Heterogeneous
  • Phase Change
  • Molar Masses
  • Crystalline
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Sample Document Text

.. CHEM 133 (Prof. DeVoe) YOUR NAME (printed) ______ _ Exam 3 Version A November 8, 2000 Circle your section number: 6117 6121 6124 6127 61:28 6131 6137 6141 6144 6145 6147 61S1 This exam has a total of 100 points. Please make sure you have all five pages. Do not write in this space 1-8 124 Page 2 118 Page 3 122 14 112 15 112 16 112 TOTAL 1100 ----- PART I. Eight multiple-choice questions (3 pts each, 24 pts total). Write the lettet: (A, B, etc.) of the one best answer for each question on the line at the right. 1. Which one of the following molecules has a dipole moment? A) BF3 B) CO 2 C) CH 4 D) Br2 E) H 2 S 2. The angles between bonds in:he PCl s molecule are A) 72 B) 90 and 180 C) 90 and 120 D) 120 only E) 180 only F) 109.SO 3. The angle between orbitals with sp3 hybridization is A) 90 B) 109.5 C) 120" D) 180 0 4. What hybridization is fredicted for carbon (the central atom) in the O=C=O molecul t :::? A) sp B) sp2 C) sp D) sp3d E) sp3d2 5....

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