Quiz 4-solutions-1

Quiz 4-solutions-1 - Version 340 – Quiz 4 – laude...

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Unformatted text preview: Version 340 – Quiz 4 – laude – (50995) 1 This print-out should have 8 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. 001 5.0 points Rank the following gases in terms of decreas- ing ideality: Cl 2 , H 2 , CO 2 , CH 4 . 1. Cl 2 > CH 4 > CO 2 > H 2 2. CO 2 > Cl 2 > CH 4 > H 2 3. CH 4 > H 2 > Cl 2 > CO 2 4. H 2 > CH 4 > CO 2 > Cl 2 correct 5. CO 2 > CH 4 > H 2 > Cl 2 Explanation: Because all of the gases are non-polar, the only consideration for non-ideality is the size. Larger molecules, evaluated by atomic mass, are less ideal. 002 5.0 points WITHDRAWN 003 5.0 points If a 10 L gaseous system at 400 K and 4 atm is heated to 800 K and allowed to expand to 20 L, what will the new pressure of the system be? 1. 1 atm 2. 16 atm 3. 2 atm 4. 8 atm 5. 4 atm correct Explanation: Doubling the temperature from 400 K to 800 K will double the pressure and doubling the volume from 10 L to 20 L will halve the pressure, resulting in no net change in pres-...
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Quiz 4-solutions-1 - Version 340 – Quiz 4 – laude...

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