Chem 177 Spring 2010 exam 1 answers

Chem 177 Spring 2010 exam 1 answers - Dr. Joe Burnett...

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Dr. Joe Burnett Spring 2010 This exam consists of 22 questions on 7 pages Chem 177 Exam I February 8, 2010 Name______________________ Recitation TA ______________ Recitation Section ___________ Grading Teaching Assistants and Recitation Sections Page Points Score Name Sections Time 2 3 4 5 6 TOTAL 24 pts 18 pts 16 pts 18 pts 26 pts 102 pts ________ ________ ________ ________ ________ Stacey Althaus Kyle Marchuk Kristopher McKee Justin Smith Anthony Stender Nishad Thamban Chandrika Songchen Xu 5 1, 10 11, 12 8 2, 3 4, 6 7, 9 10:00 8:00, 1:10 2:10, 1:10 12:10 8:00, 9:00 9:00, 11:00 11:00, 12:10 Questions are written on both sides of each page. There is a periodic table and an equation on the last page. You may remove this page for scratch paper. Show all work. Answers should include appropriate units and contain the correct number of significant figures. The last day to drop Chem 177 and add Chem 50 is Thursday, March 4, at 4:00 PM. See your advisor to obtain the drop/add form and go to the General Chemistry Office, room 1608 Gilman Hall. Answer Key
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2 1. (2 pts) What subatomic particle or particles are found outside of the nucleus of an atom? electrons 2. (4 pts) The correct answer (reported to the proper number of significant figures) to the following is _________ . (181.5 – 180.6) × (9.11 × 7.92) = 64.93608 a) 64.93608 b) 64.9 c) 6.50 × 10 1 d) 6.5 × 10 1 e) 6 × 10 1 3. For full credit, show all work, use units, and 1 mol of CO 2 : 5.00 g CO 2 Ν Μ Λ Π Ο Ξ 1 mol CO 2 44.0 g Ν Μ Λ 1.37 × 10 23 O atoms 3 sig figs or 5.00 g CO 2 Ν Μ Λ Π Ο Ξ 1 mol CO 2 44.0 g Ν Μ Λ Π Ο 1 mol CO 2 Ν Μ Π Ο 1 mol O = 1.37 ×
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This note was uploaded on 09/09/2011 for the course CHEM 177 taught by Professor Greenbowe during the Spring '06 term at Iowa State.

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Chem 177 Spring 2010 exam 1 answers - Dr. Joe Burnett...

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