Exam2.FormA.YellowVersion.2010 - Chem. 1B Exam 2 2010 Name:...

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1 Chem. 1B Exam 2 2010 Name: Last Name First Name FORM A There are a total of five pages ( 19 questions ) on the exam. Show all your work on the exam and circle the answers. You will keep the exam so you can check your answers. The answers to the exam will be posted on our course web page. Carefully check all your answers on your Scantron form. Make sure you have indicated one answer for each question. There is only one answer for each question. SCANTRON FORM: Completely fill bubbles 1) Write your name Completely fill answers 2) Bubble in FORM A 3) Bubble in your PERM number (7 digits only, no extra numbers) INFORMATION PAGE: Remove the information page. No other notes or books are allowed. INSTRUCTIONS: No hats or hoods allowed. No sharing of calculators. Cell Phones, iPods, headsets, and any other electronic devices must be turned off and put away. Remain seated until 9:50 AM Questions 1 – 3: (3 pts each) Light is absorbed when an electron in the n = 1 level of a hydrogen atom moves into the n = 3 level. Following the absorption of light, the H-atom emits a photon and the electron moves to the n = 2 level. Which of the following statements is true? Indicate true or false. ANSWERS are given at the end of the exam 1. The net value of the change in energy, Δ E, for the two steps is positive. A) true B) false 2. The emitted light has a shorter wavelength than the absorbed light. A) true B) false 3. The frequency of the absorbed light is smaller than the frequency of the emitted light A) true B) false 4. (6 pts) The energy required to remove one mole of electrons from the surface of Li ( s ) is 280 kJ/mol. When
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This note was uploaded on 03/20/2010 for the course CHEM 1B taught by Professor Watts during the Winter '08 term at UCSB.

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Exam2.FormA.YellowVersion.2010 - Chem. 1B Exam 2 2010 Name:...

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