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Unformatted text preview: Practice Final Exam The actual final exam will be different since we do not use the same questions or test you on exactly the same concepts. Therefore this practice final is a useful aid ONLY in preparing for the pace, format, and language of our questions. We would like to remind you that you are responsible for all material covered in lectures, quizzes, textbook, and OWL and textbook problems. If you felt that the midterm practice exams were absolutely useless, please study and review for the final using the materials that work for you. If you are planning to go over this test, you should FIRST review concepts , then sit down in a quiet place with your calculator, three sheets of info attached to each exam, and try to answer all questions. To check your answers you should go back to the textbook or your notes. Also, consider discussing your answers with other students taking this course. The actual final is 2 hour exam and there will be, as in this test, 40 questions. 1. The statement that the first ionization energy for an oxygen atom is lower than the first ionization energy for a nitrogen atom is a) consistent with the general trend relating changes in ionization energy across a period from left to right because it is easier to take an electron from an oxygen atom than from a nitrogen atom. b)consistent with the general trend relating changes in ionization energy across a period from left to right because it is harder to take an electron from an oxygen atom than from a nitrogen atom. c) inconsistent with the general trend relating changes in ionization energy across a period from left to right and due to the fact that the oxygen atom has two doubly occupied 2p orbitals and nitrogen has only one. d)inconsistent with the general trend relating changes in ionization energy across a period from left to right and due to the fact that oxygen has one doubly occupied 2p orbital and nitrogen does not. e) incorrect. 2. Which molecule or ion has the same molecular geometry for its central atom as the carbonate ion? a) BrO 3 b)AsCl 3 c) CH 3 d)H 2 CO e) PF 3 3. Which molecule or ion has a bond order of 2.5? a) O 2 b)O 2 c) O 2 2 d)O 2 + e) NO 4. Which of the following molecules is nonpolar? a) HF b)ICl 3 c) NF 3 d)SF 4 e) all are polar 5. A 10.17-g sample of solid sodium bicarbonate (the active ingredient in baking soda) completely decomposes into solid sodium hydroxide and carbon dioxide gas when heated. After the sodium hydroxide cools, it has a mass of 4.84 g. According to the law of conservation of mass, what mass of carbon dioxide must have been formed?...
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This note was uploaded on 01/31/2012 for the course CHEM 130 taught by Professor Jadwigasipowska during the Fall '07 term at University of Michigan.
- Fall '07