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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
  • Sp2 Hybridization
  • Hypothetical
  • Temperature
  • Final Answers
  • Phase Change
  • Crystalline
  • Triple Point
  • Short Answers
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Sample Document Text

.. CHEM 133 (Prof. DeVoe) Exam 3 Version B November 8, 2000 CIrcle your section number: 6117 6137 YOUR NAME (printed) __ 6121 6124 6127 6141 6144 614S This exam has a total of 100 points. Please make sure you have all five pages. Do not write in this space \-8 __ 124 Page 2 ___ /18 Page 3 ___ 122 6128 6131 6147 61!51 14 ___ 112 15 ___ /\2 16 ___ 112 TOT AL _____ II 00 PART I. Eight multiple-choice questions (3 pts each. 24 pts total). Write the lelli~ (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) Br: B) BF3 C) H:S D) CO 2 E) CH 4 The angles between bonds in the PCls molecule are A) 72 B) 90 and 120 C) 90 and 180~ D) 120 0 only E) 180 0 only F) 109.5 3. What hybridization is rredicted for carbon (the central atom) in the O=:C=O molecule') A) sp B) sp2 C) sp D),p3 d E) sp3 d 2 4. The angle between orbitals with sp2 hybridization is A) 90 B) 109....

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