2008 Test 1 - Solutions

2008 Test 1 - Solutions - Name Chemistry 1AA3 McMaster...

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Name: ____________________ Student number: ______________ Page 1 of 15 Version # 1 Continued on next page Chemistry 1AA3 Test 1 February 1, 2008 McMaster University VERSION 1 ANSWERS in blue + SOLUTIONS Instructors: P. Berti, P. Lock, J. Valliant Duration: 100 minutes This test contains 22 numbered pages printed on both sides. There are 25 multiple-choice questions appearing on pages numbered 3 to 18. Page 21 includes some useful data and equations. There is a periodic table on page 22. Pages 19 & 20 may be used for rough work. You may tear off the last pages to view the periodic table and to do your rough work. You must enter your name and student number on the question sheets, 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 20 are each worth 2 marks, questions 21 – 25 are each worth 3 marks; the total marks available are 55. 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 SPACE PROVIDED 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). No work written on the question sheets will be marked . The question sheets may be collected and reviewed in cases of suspected academic dishonesty. 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.
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Name: ____________________ Student number: ______________ Page 2 of 15 Version # 1 Continued on next page You are writing VERSION 1 of this test. Make sure you have correctly entered your version number (“1”) in the correct column on your scan sheet (see p. 2 for details). Questions 1 through 20 are worth two (2) marks each. 1. The purpose of a recrystallization is: (A) To check the miscibility of two compounds. (B) To dry a compound before taking the melting point. (C) To purify a compound. (D) To find out the boiling point of compound. (E) To check the solubility of a compound. 2. Octane, C 8 H 18 , undergoes complete combustion in excess oxygen to give carbon dioxide and water. How many litres (L) of CO 2 (g) are produced in the complete combustion of 18.0 g of octane at 50.0 ° C and 1.00 atm?
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2008 Test 1 - Solutions - Name Chemistry 1AA3 McMaster...

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