CHEM 2261 : CHEM 2261 Exam1 Practice 2012spring
Document Summary
This exam has 6 printed pages of questions. Check now to make sure you have all 6 pages. Make sure to print your name in caps and last 4 digits of your student id# above. Use only ballpoint or ink pen for final answers. Write clearly in the spaces provided, use back pages only for scratch work. This exam is worth a total of 100 points: multiple choice (3 pt each, 18 pt total). 1: which of the following structure depicts the most stable conformation of cis-1-ethyl- Calculate the formal charge of the central atom of each of the following molecules/ions. (2pt each, 10pt) Draw the complete lewis dot structures for the molecules below. Show all electrons and non-zero formal charges where needed. (4pt each, 12 pt total: ch3chbr2, hco3, (ch3)3ccn. +, bhf2 and chcl3 using wedges and dashes to indicate in-plane and out-of plane bonds.
