115 Final %28Late%29 Sp%2709

115 Final %28Late%29 Sp%2709 - Name Section Chemistry 115...

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Name _________________________ Chemistry 115 Section ____________ FINAL EXAM Total Points = 210 TA ___________________________ Tuesday, 10:30 AM May 5, 2009 Directions: 1. Each student is responsible for following directions. Read this page carefully. 2. Write your name and other requested information on this page and on the separate answer sheet. 3. CODE your name on the answer sheet using an ordinary (#2) pencil. 4. CODE your correct 10-digit identification number (PUID) on the answer sheet. THIS IS VERY IMPORTANT! 5. CODE your section number on the answer sheet. Please use all four digits, 0101, 0102, 0201, etc. This is also very important! 6. Put all calculations on the examination pages. DO NOT PUT ANY EXTRA MARKS ON THE COMPUTER ANSWER SHEET! 7. This exam consists of 35 multiple-choice questions worth 6 points each. Choose the one best or correct answer for each question and write it both on your exam paper and on the computer answer sheet. The computer answer sheet is the only one that will be graded! 8. This exam consists of 10 pages plus a Table of Useful Information, a Periodic Table and 1 sheet of scratch paper. Please check to be sure that you have them all! YOU MUST TURN IN ALL PAPERS… YOUR EXAM BOOKLET AND YOUR SCAN SHEET TO YOUR TA BEFORE LEAVING THE EXAMINATION AREA! You can record your answers on the last page of the exam booklet and take that with you.
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115 − Final Exam (Late) − 05/05/09 _____ 1. Which of the following molecules does not have permanent dipole moment? Cl F F Cl I. II. III. CF 4 IV. C 2 F 2 F F (a) III only (b) II only (c) I and II (d) II and IV (e) I, II, and IV _____ 2. Which of the following is correct about semiconductor based solar cells? (a) They are made of intrinsic semiconductors. (b) They covert radiation energy into electrical energy. (c) They are made of doped semiconductors, n-type and p-type fused together to form a p-n junction. (d) Both b and c. (e) Both a and b. _____ 3. Which of the following is an example of an addition polymer? (a) PVA (b) DNA (c) Lipid (d) Saturated fat (e) Nylon _____ 4. A solution is 24.0% by weight H 2 SO 4 . What is the molality of the solution? (a) less than 1.00 m (b) between 2.0 m and 4.0 m (c) between 5.0 m and 7.0 m (d) between 16.0 m and 18.0 m (e) greater than 20.0 m KEEP YOUR ANSWERS AND WORK COVERED TO PROTECT THE INTEGRITY OF YOUR WORK! 2
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115 − Final Exam (Late) − 05/05/09 _____ 5. A solution is prepared by dissolving 2.39 g of an unknown nonelectrolyte in enough water to make 0.500 L of solution. The osmotic pressure of the solution is 1.98 atm at 27 ° C. What is the molar mass of the solute? [R = 0.08206 L.atm/mol.K] (a) less than 25 g/mol (b) between 55 g/mol and 65 g/mol (c)
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This note was uploaded on 02/06/2012 for the course CHM 115 taught by Professor Towns during the Spring '08 term at Purdue.

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115 Final %28Late%29 Sp%2709 - Name Section Chemistry 115...

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