exam3b.review.2008

exam3b.review.2008 - Exam 3 Thursday November 12 8:30 10:00...

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1 DO NOT ARRIVE LATE Be sure to bring the following: • Stony Brook ID card • 2 or more #2 pencils and a good eraser • Calculator with extra batteries Do NOT bring any of the following: • Cell phones, beepers, IM/texting devices, iPods, or other electronic or communication devices • Textbook, notes, or any aids to taking the exam Violations may result in a course grade of F and a report to the Academic Judiciary. No one will be permitted to leave the exam before 9:45 PM. Exam 3, Thursday, November 12, 8:30 – 10:00 PM 2 You will be given Constants/conversions Specific data values (vdw a, b, etc) Cell volume equations Periodic table Complex equations (not ideal gas law) Exam 3, Thursday, November 12, 8:30 – 10:00 PM
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3 Light Engineering 102 106832737 – 999999999 Engineering 145 106767691 – 106832736 Javits 102 106617891 – 106649349 Engineering 143 106722193 – 106767690 Harriman Hall 137 106688127 – 106722192 Javits 110 106649350 – 106688126 Old Chemistry 116 106579616 – 106617890 Earth & Space Science 001 106334943 – 106579615 Javits 100 000000000 – 106334942 Room Solar ID Room Assignments for Exam 3 Thursday, November 13 th , 8:30 – 10:00 PM 4 Review: Exam #3 • Chapter 4, 10, 11 • 26 multiple choice problems • Some conceptual, some numerical • Range from easy to fairly challenging • Point value same regardless of difficulty! • Review lecture notes • PRACTICE problem solving • Do not work too hard weds PM Do not attempt “new” material 24 hours before exam
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5 Chapter summaries • Note that there is NO way to summarize all of the important points in 1 lecture! • Study EVERYTHING that we covered. This is just the highlights. 6 Chapter 10
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7 Properties of Gases • Gases can be compressed Gases can be compressed • Gases expand into any available volume Gases expand into any available volume • gas molecules escape from open containers. • Gases are completely miscible Gases are completely miscible • once mixed they will not spontaneously separate. • Gases are described in terms of Gases are described in terms of T, P, V T, P, V and and n 8 Kinetic Molecular Theory •A gas consists of tiny molecules in rapid, random motion. Gas molecules: • are small compared to the distances between them ± easily compressed. ± mix completely with other gases. • move randomly at very high speeds. • have small attractions/repulsions for each other. ± all gases behave the same way. • make elastic collisions with each other. ± don’t slow over time & fall to bottom of container
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9 Kinetic Molecular Theory Higher temperature = higher speed Higher temperature = higher speed 200 400 600 800 1000 1200 1400 1600 molecular speed (m/s) Number of molecules Most probable speed at 25°C Most probable speed at 1000°C Average speed at 25°C Average speed at 1000°C 25°C 1000°C O 2 (g) 10 Molar Mass Effect on Molecular Speeds Lower mass = higher speed (same KE!) Lower mass = higher speed (same KE!) 0 500 1000 1500 2000 molecular speed (m/s) He He O 2 N 2 H 2 O
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11 Boyle’s Law: P 1 V 1 = P 2 V 2 12 Charles’s Law
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13 The ideal gas law is a combination of: The Ideal Gas Law IDEAL GAS LAW PV = nRT or V = nRT P Boyle’s Law V 1 P fixed n and T Avogadro’s Law V n fixed P and T Charles’s Law V T fixed n and P
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This note was uploaded on 07/15/2009 for the course CHE 131 taught by Professor Kerber during the Fall '08 term at SUNY Stony Brook.

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exam3b.review.2008 - Exam 3 Thursday November 12 8:30 10:00...

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