Chem%20161-2008%20Exam%20I%20%2B%20detailed%20solutions -...

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Chemistry 161 Exam I September 24, 2008 Student Name (Print): ____TAVSS ________________ Recitation Section Number: FF Recitation Instructor: ____TAVSS ______________ The exam booklet has 25 questions for credit and one additional question to check the color of your exam booklet. Please answer all 26 questions on the OpScan sheet. There is no penalty for guessing. At the end of the 80-minute exam period, please hand in only this top sheet and your OpScan form. If you finish early, please do not disturb your fellow students. A proctor will check your picture ID, OpScan form, signature and calculator during the exam. The use of calculators with permanent memories (graphing calculators), cell phones, pagers, PDAs or other electronic devices other than a basic scientific calculator is expressly forbidden. The last pages of the booklet contains a periodic table along with other useful data. The use of any other notes or information on this test will be considered a violation of the Academic Honesty provisions of the student code. Exam scores will be posted as soon as possible. There is a five point penalty for failing to bubble in your information! . ON THE OpScan FORM (Use a #2 pencil or darker) Sec Per. Instr Sec Per. Instr 1. SIGN your name across the top of the form. 01 M3 DS 19 M1 LK 2. Code the following information ( blacken circles) 02 M5 EL 20 M3 NM Your Name (LAST NAME FIRST) 03 M5 GG 21 M3 GG Your RU ID NUMBER 04 W3 RA 22 W1 NM [Start under Box A and continue to Box I ] 05 W5 RA 23 W1 ET Your RECITATION SECTION NUMBER in 06 W5 HS 24 W3 GG [Sections 01-09, code a 0 under box K ] 07 F3 HS 25 Th1 ET Your EXAM FORM NUMBER under box P 08 F5 LP 26 Th1 SM 09 F5 HS 27 Th3 LP JL, DS = D. Siegel, EL = E. Lee 28 Th3 SM ET = E. Tavss, GG = G. Govindarajoo, HS = H. Sangari OS JL Please bubble 99 29 Th3 ET LK = L. Klein, MV = M. Viterelli, 12 M2 LK 30 M6 YS YS = Y. Shin, LP = L. Petrone, 13 W2 NM 31 M6 EL SM = S. Marvasti, RA = R. Agarwal 14 W2 HS 32 M6 MV Periods: 1 = 9:30-10:25, 2 = 11:10-12:05 15 Th2 LP 33 W6 MV 3 = 12:15-1:10 or 12:50-1:45 16 M2 NM 34 W6 RA 5 = 3:35-4:30, 6 = 5:15-6:10, 8 = 8:25p-9:20p 17 W2 LK 35 M8 MV Your EXAM FORM is c 18 M1 HS 36 M8 EL C161f08e1v1 1
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Your EXAM FORM is c 1 Chem 161-2008 Exam I Hill, Petrucci et al. CHAPTER 3B - STOICHIOMETRY Reaction stoichiometry Which statement is true if 5.00 moles of Al are mixed with 3.00 moles of Fe 2 O 3 in the reaction: 2Al + Fe 2 O 3 Al 2 O 3 + 2Fe Assuming 100% yield, which statement is true? A . 0.50 moles of Fe 2 O 3 are left over B. 6.00 moles of Fe are formed C. 10.0 moles of Fe are formed D. 1.00 mole of Al is left over E. 2.00 moles of Al 2 O 3 are formed 2Al + Fe 2 O 3 Al 2 O 3 + 2Fe 5.00 mol 3.00 mol Based on the 2:1 Al:Fe 2 O 3 stoichiometry, 5.00 mol Al require 2.50 mol Fe 2 O 3 . But 3.00 mol of Fe 2 O 3 is present, an excess of 0.50 mol. 2 Chem 161-2008 Exam I
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This note was uploaded on 03/08/2011 for the course CHEM 161 taught by Professor Vacillian during the Fall '08 term at Rutgers.

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Chem%20161-2008%20Exam%20I%20%2B%20detailed%20solutions -...

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