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Not valid for use as an ACS Olympiad Local Section Exam after April 14, 2003. STOCK CODE OL03 Distributed by the ACS DivCHED Examinations Institute, University of Wisconsin - Milwaukee, Milwaukee, WI. All rights reserved. Printed in U.S.A. 2003 U. S. NATIONAL CHEMISTRY OLYMPIAD LOCAL SECTION EXAM Prepared by the American Chemical Society Olympiad Examinations Task Force OLYMPIAD EXAMINATIONS TASK FORCE Arden P. Zipp, State University of New York, Cortland Chair Peter E. Demmin (retired), Amherst Central High School, NY David W. Hostage, Taft School, CT Alice Johnsen, Bellaire High School, TX Jerry D. Mullins, Plano Senior High School, TX Ronald O. Ragsdale, University of Utah, UT Amy Rogers, College of Charleston, SC DIRECTIONS TO THE EXAMINER This test is designed to be taken with an answer sheet on which the student records his or her responses. All answers are to be marked on that sheet, not written in the booklet. Each student should be provided with an answer sheet and scratch paper, both of which must be turned in with the test booklet at the end of the examination. Local Sections may use an answer sheet of their own choice. The full examination consists of 60 multiple-choice questions representing a fairly wide range of difficulty. Students should be permitted to use non-programmable calculators. A periodic table and other useful information are provided on page two of this exam booklet for student reference. Suggested Time: 60 questions—110 minutes DIRECTIONS TO THE EXAMINEE DO NOT TURN THE PAGE UNTIL DIRECTED TO DO SO. This is a multiple-choice examination with four choices for each question. There is only one correct or best answer to each question. When you select your choice, blacken the corresponding space on the answer sheet with your pencil. Make a heavy full mark, but no stray marks. If you decide to change your answer, be certain to erase your original answer completely.
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Page 2 Not Valid as a Local USNCO Exam after April 14, 2003 ABBREVIATIONS AND SYMBOLS CONSTANTS ampere A atmosphere atm atomic mass unit u atomic molar mass A Avogadro constant N A Celsius temperature °C centi– prefix c coulomb C electromotive force E energy of activation E a enthalpy H entropy S equilibrium constant K Faraday constant F formula molar mass M free energy G frequency ν gas constant R gram g heat capacity C p hour h joule J kelvin K kilo– prefix k liter L milli– prefix m molal m molar M molar mass M mole mol Planck’s constant h pressure P rate constant k retention factor R f second s temperature, K T time t volt V R = 8.314 J·mol –1 ·K –1 R = 0.0821 L·atm·mol –1 ·K –1 1 F = 96,500 C·mol –1 1 F = 96,500 J·V –1 ·mol –1 N A = 6.022 × 10 23 mol –1 h = 6.626 × 10 –34 J·s c = 2.998 × 10 8 m·s –1 0 °C = 273.15 K 1 atm = 760 mmHg EQUATIONS EE RT nF Q =− o ln ln K H RT = + 1 constant ln k k E RT T a 2 11 2 1 PERIODIC TABLE OF THE ELEMENTS 18 1A 8A 1 H 1.008 2 1 3 1 4 1 51 6 1 7 2A 3A 4A 5A 6A 7A 2 He 4.003 3 Li 6.941 4 Be 9.012 5 B 10.81 6 C 12.01 7 N 14.01 8 O 16.00 9 F 19.00 10
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