Exam-2008 - Name: _ Student Number: _ CHEMISTRY 1E03 4...

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Name: ________________________ Student Number: _______________ Version 1 Page 1 CHEMISTRY 1E03 4 DECEMBER 2008 McMASTER UNIVERSITY - FINAL EXMINATION DURATION: 3 HOURS Instructors: J. Barbier, R. S. Dumont This examination contains 21 numbered pages and 35 multiple-choice questions. The last pages include three blank pages for rough work, one page with useful data and equations, and one page with a Periodic Table. These pages can be torn off. You are responsible for ensuring that your copy of the question paper is complete . Bring any discrepancy to the attention of your invigilator. Make sure to enter the correct version number of your test (shown at the bottom of each page) in the correct column on the answer sheet (see instructions on page 2). Questions 1-25 are each worth 2 marks, questions 26–35 are each worth 3 marks . The total marks available are 80. There is no penalty for incorrect answers. These question sheets must be returned with your answer sheet. However, no work written on the question sheets will be marked . You must enter your full name and student number on this question sheet, as well as on the answer sheet. Your invigilator will be checking your student card for identification. Answer all questions on the answer sheet, in pencil . Instructions for entering multiple-choice answers are given on page 2. Select one answer for each question from the choices (A) through (E). Only Casio FX 991 electronic calculators may be used; but they must NOT be transferred between students. Use of periodic tables or any aids other than those provided, is not allowed. Do not make contact with other students directly. Try to keep your eyes on your own paper – looking around the room may be interpreted as an attempt to copy. Academic dishonesty may include, among other actions, communication of any kind (verbal, visual, etc.) between students, sharing of materials between students, copying or looking at other students’ work. If you have a problem please ask the invigilator to deal with it for you.
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Name: ________________________ Student Number: _______________ Version 1 Page 2 QUESTIONS 1–25 ARE WORTH 2 MARKS EACH. 1. A gaseous compound, containing 42.4% nitrogen and 57.6% fluorine by mass, has a density of 1.393 g L –1 at 100.0 o C and 0.646 atm. What is the molecular formula of the compound? A) N 2 F 2 B) NF C) N 2 F 4 D) NF 3 E) NF 2 2. A system initially has an internal energy U = 501 J. It undergoes a process during which 111 J of heat is transferred to the surroundings and 222 J of work is done on the surroundings. What is the final internal energy (in J) of the system? A) 390 B) 612 C) 834 D) 279 E) 168
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Name: ________________________ Student Number: _______________ Version 1 Page 3 3. Which of the following statements are TRUE ? (i) A photon with a frequency of 1 Hz (or 1 s
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Exam-2008 - Name: _ Student Number: _ CHEMISTRY 1E03 4...

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