Chem 115Exam3 Key

Chem 115Exam3 Key - page 1 of 10 Name _KEY_ Last 5 digits...

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α page 1 of 10 Name _______ KEY _________________________ Last 5 digits of Student Number: XXX – X ___ – ___ ___ ___ ___ (may be the same as your social security number) Chem 103 Sample Examination #3 This exam consists of ten (10) pages, including this cover page. Be sure your copy is complete before beginning your work. If this test packet is defective, ask for another one. A copy of the Periodic Table is attached at the back of the exam. You may remove it and use the back side of the Periodic Table as scratch paper. No work on scratch paper will be graded or collected. The following information may be useful: Constants of nature Equations Speed of light, c = 2.998 × 10 8 m/s Planck’s constant, h = 6.626 × 10 -34 J s Rhc = 2.179 × 10 -18 J/atom = 1312 kJ/mol Conversions/Metric Prefixes 1 nm = 10 –9 m 1 Hz = 1 s –1 c = λν E = h ν 2 n Rhc E n = from which can be derived that = Δ 2 2 1 1 initial final n n Rhc E DO NOT WRITE BELOW THIS LINE Part 1 – Short response (out of 60): Disclaimer: This is a copy of a typical Exam 3 given in Chem 103 during the academic year. Your test will be different. This test is being posted to give you a sense of the format, style, scope and level of a typical test on this material. This test may have questions on topics that may not be covered on your exam. Moreover, your test may have questions on topics not covered in this practice exam. Posting this test in no way limits the format, style, scope and level of the test that you will take. Do not limit your preparation to the material in this practice exam. Part 2 – Problems Problem 1 (out of 10): Problem 2 (out of 10): Problem 3 (out of 10): Part 3 – Laboratory (out of 10): TOTAL (out of 100):
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α page 2 of 10 Part I. Multiple-Choice or Short Response Point values of questions are indicated in curly brackets {…}. 1. {3 pts} Red light has wavelength 690 nm. What is the frequency of the red light? A) 2.1 × 10 11 Hz B) 4.2 × 10 5 Hz C) 2.3 × 10 -15 Hz D) 4.3 × 10 14 Hz 2. {3 pts} Which one answer has the electromagnetic radiation correctly ordered from lowest energy to highest energy? A) ultraviolet, red, infrared, green
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This note was uploaded on 10/24/2011 for the course ANP 101 taught by Professor Jaques during the Spring '11 term at Queens University.

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Chem 115Exam3 Key - page 1 of 10 Name _KEY_ Last 5 digits...

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