CHem FINAL 1

# CHem FINAL 1 - Create assignment 54700 Practice 4 Nov 28 at...

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Create assignment, 54700, Practice 4, Nov 28 at 4:10 pm 1 This print-out should have 31 questions. Multiple-choice questions may continue on the next column or page – fnd all choices beFore answering. The due time is Central time. Brodbelt CH301 Practice ±inal Exam ±all 2007 Use oF programmable calculators or cell phones is considered cheating and thus is prohibited. You may not leave the room For any reason. You may not start the exam aFter 7;15 pm. GOOD LUCK! Brodbelt 013 010 03:06, general, multiple choice, > 1 min, . 001 Calculate the number oF carbon atoms in 0.75 L oF acetone (CH 3 COCH 3 ). (density = 1.3 g/mL and boiling point = 48.5 degrees Celsius) 1. 3 . 0 × 10 25 atoms 2. 3 . 0 × 10 22 atoms 3. 1 . 0 × 10 25 atoms 4. 1 . 0 × 10 22 atoms 5. 1 . 8 × 10 25 atoms 6. 1 . 8 × 10 22 atoms Brodbelt 03 0400 04:11, general, multiple choice, < 1 min, . 002 IF 39.0 g oF C 6 H 6 reacts with excess chlorine and produces 30.0 g oF C 6 H 5 Cl in the reaction C 6 H 6 + Cl 2 C 6 H 5 Cl + HCl , what is the percent yield oF C 6 H 5 Cl? 1. 53.4% 2. 13.2% 3. 76.9% 4. 69.4% 5. 50.0% Mlib 04 1059mod 14:10, general, multiple choice, < 1 min, . 003 When two samples oF ideal gases have the same ? , their molecules must have the same ? . 1. density; average kinetic energy 2. density; mass 3. volume; average kinetic energy 4. volume; mass 5. pressure; average kinetic energy 6. pressure; mass 7. mass; average kinetic energy 8. mass; density 9. temperature; average kinetic energy 10. temperature; speed Brodbelt 2006photon 08:01, general, multiple choice, < 1 min, . 004 Carbon atoms emit photons at 574 nm when exposed to blackbody radiation. How much energy would be obtained iF 4.50 moles oF propane (C 3 H 8 ) were pyrolyzed and the re- sulting carbon atoms exposed to blackbody radiation? 1. 2 . 67 × 10 - 19 J 2. 2 . 82 × 10 6 J 3. 1 . 17 × 10 - 17 J

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Create assignment, 54700, Practice 4, Nov 28 at 4:10 pm 2 4. 9 . 11 × 10 - 21 J 5. 9 . 39 × 10 5 J 6. 5 . 90 × 10 5 J Brodbelt 439 04:02, general, multiple choice, < 1 min, . 005 If the following equation is properly balanced, what are the coeFcients in front of each com- pound? AlCl 3 + SCl 2 Al 2 S + Cl 2 1. 2; 1; 1; 4 2. 2; 2; 1; 4 3. 1; 2; 1; 4 4. 2; 1; 2; 4 5. 1; 1; 1; 1 6. 1; 2; 1; 2 7. 2; 2; 2; 5 8. 2; 2; 1; 5 Brodbelt 03 10 06:02, general, multiple choice, > 1 min, . 006
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## This note was uploaded on 04/30/2011 for the course CH 301 taught by Professor Fakhreddine/lyon during the Fall '07 term at University of Texas.

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CHem FINAL 1 - Create assignment 54700 Practice 4 Nov 28 at...

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