#Chem 161-2004 Exam II + answers

#Chem 161-2004 Exam II + answers - Chemistry 161 Exam II...

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Chemistry 161 Exam II November 3, 2004 Student Name: __TAVSS___________________ Recitation Section Number: ____ Recitation Instructor: __TAVSS_______________________ The exam has 25 questions for credit and an additional one 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 and signature during the exam. Exam scores and an exam curve will be posted as soon as possible. ON THE OpScan FORM: (Use a Number 2 Pencil or Darker) SEC. PER. INST. SEC. PER. NST SIGN your name across the TOP of the form. 01 M3 HS 32 M6 BL 02 M5 BL 33 W6 HS (2) code only the following information [ blacken circles] 03 M5 DS 35 M8 BL 04 W3 ME 36 M8 JJ (a) Your Name . . . LAST NAME FIRST 05 W5 DS [ blank space between last and first names ] 06 W5 HS INITIAL KEY: 07 F3 NM (b) Your SOCIAL SECURITY NUMBER 08 F5 ME HS = H. Sangari [Start under Box A and continue to Box I ] 09 F5 ME 18 M1 FS (c) Your RECITATION SECTION NUMBER (Boxes ) 19 M1 RA FS = F. Serefiddin [Sections 01 – 09, code the zero under Box K ] 20 M3 FS 21 M3 RA NM = N. Marky (d) Your EXAM FORM NUMBER (Box P ) 22 W1 ET 23 W1 FS BL = B. Langowski 24 W3 ET 25 H1 FS JJ = J. Jefferis 26 H1 RA 27 H3 ME DS = D. Siegel 28 H3 RA 29 H3 ET ET = E. Tavss 30 M6 JJ 31 M6 HS ME = M. Esguerra Your EXAM FORM is: RA = R. Agarwal See last page of exam for periodic table and atomic weights. 161E XAM II V1 F ALL 2004 1
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161E XAM II V1 F ALL 2004 2
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BEFORE STARTING THE EXAM PUT YOUR FORM # IN COLUMN P AND YOUR SECTION # IN COLUMN K AND L ON THE SCANTRON. ALSO DARKEN THE CIRCLES PLEASE. 1. Chem 162-2004 Hourly exam II Chapter 4B - Reactions and Stoichiometry Precipitation reactions What amount of silver chloride can be prepared by the reaction of 100.0 mL of 0.20 M silver nitrate with 100.0 mL of 0.15 M calcium chloride? A. 0.015 moles B . 0.020 moles C. 0.030 moles D. 0.025 moles E. 0.035 moles Stoichiometry 2AgNO 3 + CaCl 2 Ca(NO 3 ) 2 + 2AgCl 0.100 L 0.100 L ?mol 0.20 M 0.15 M Limiting reactant problem Stoichiometry: 2 mol AgNO 3 :1 mol CaCl 2 Actually: AgNO 3 : 0.20 mol/L x 0.100 L = 0.020 mol AgNO 3 CaCl 2 : 0.15 mol/L x 0.100 L = 0.015 mol CaCl 2 Actual stoichiometry : 0.020 mol AgNO 3 :0.015 mol CaCl 2 = 1.333 mol AgNO 3 :1 mol CaCl 2 Limiting reactant: AgNO 3 0.020 mol AgNO 3 x (2 mol AgCl/2 mol AgNO 3 ) = 0.020 mol AgCl 2. Chem 162-2004 Hourly exam II Chapter 5 - Gases Gas Laws A 275 mL container holds a gas at a pressure of 1.50 atm and a temperature of 20 ° C.
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This note was uploaded on 04/12/2008 for the course CHEM 161 taught by Professor Vacillian during the Fall '08 term at Rutgers.

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#Chem 161-2004 Exam II + answers - Chemistry 161 Exam II...

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