CHEM 133 (Prof. DeVoe) YOUR NAME (printed) -------------- Exam 2 Version B October 27, 1999 Circle the name of your T A: David Kedar Natalia Okan Rich Scott Seung This exam has a total of 100 points. Please make sure you have all five: pages. Do not write in this space 1-12 __ /36 13 110 14 __ /3 15 112 16 /3 17 ___ /6 18 /10 19 ___ 110 20 __ /10 TOTAL ____ 1100 PART I. Twelve multiple-choice questions (3 pts each, 36 pts total). Write the .Iette( (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) H 2 S E) Br2 2. The angles between bonds in a molecule with a trigonal bipyramidal geometry are A) 109.5° B) 90° and 180° C) 90° and 120° D) 120° only E) 180° only 3. The angle between orbitals with sp2 hybridization is A) 90° B) 109.5° C) 120° D) 180° 4. What hybridization is predicted for carbon (the central atom) in the O=C=O molecule? A) sp B...