Sample Exam (2007) - Name: _ Chemistry 1A03 Student number:...

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Name: ____________________ Student number: ______________ Chemistry 1A03 Final Exam – Version 1 December, 2007 Instructor: Drs. P. Britz-McKibbin, G. Goward, P. Lock MCMASTER UNIVERSITY FINAL EXAMINATION Duration: 3 hours This exam contains 32 numbered pages. There are 35 multiple-choice questions appearing on pages numbered 3 to 26. Pages 27-30 are extra space for rough work. Page 31 includes some useful data and equations, and there is a periodic table on page 32. You may tear off the last pages to view the periodic table and the data provided. 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. You are responsible for ensuring that your copy of the question paper is complete. Bring any discrepancy to the attention of your invigilator. Questions 1 to 24 are each worth 2 marks, questions 25 – 35 are each worth 3 marks; the total marks available are 81. There is no additional penalty for incorrect answers. BE SURE TO ENTER THE CORRECT VERSION OF YOUR TEST (shown near the top of page 1), IN THE CORRECT COLUMN ON THE ANSWER SHEET. ANSWER ALL QUESTIONS ON THE ANSWER SHEET, IN PENCIL. Instructions for entering multiple-choice answers are given on page 2. SELECT ONE AND ONLY ONE ANSWER FOR EACH QUESTION from the answers (A) through (E). 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. 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. 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. Page 1 of 27 VERSION 1 Continued on next page
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Name: ____________________ Student number: ______________ See page 2 of the exam for instructions. Questions 1 – 24 are worth 2 marks each. 1. Δ H (enthalpy) and Δ U (internal energy) are only equal to each other when: (A) Pressure is constant. (B) No work is done. (C) Reaction occurs in the gas phase. (D) Δ S is equal to zero. (E) They are never equal. 2. The heat of reaction for Mg(s) + 2HCl(aq) MgCl 2 (aq) + H 2 (g) is determined using an ice calorimeter similar to that seen in experiment # 5. The experimental result differed from the actual value by 20%. Which of the following experimental errors would have the greatest influence on the result? (A) Δ V, which was in the range of 0.5 mL, was measured with a pipette that was only calibrated to the nearest .01 of a mL.
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This note was uploaded on 03/11/2012 for the course SCIENCE Various taught by Professor Various during the Fall '12 term at McMaster University.

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Sample Exam (2007) - Name: _ Chemistry 1A03 Student number:...

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