Test 4, F 07, Form A

Test 4, F 07, Form A - Chemistry 1035 Fourth Test FORM A...

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Chemistry 1035 Fourth Test FORM A November 28, 2007 I promise that I will abide by the Virginia Tech Honor Code while taking this test. Signature Printed Name ___________________________ 1. A sample of gas is initially at 30.0 o C. If the temperature is increased at constant pressure, what is the final Celsius temperature if the volume increases by 45.0%? 1. 43.5 o C 2. 64.0 o C 3. 166 o C 4. 209 o C 2. What is the volume, in liters, occupied by 20.0 grams of C 2 H 6 gas at STP? 1. 14.9 L 2. 24.9 L 3. 33.6 L 4. 448 L 3. A 500-milliliter flask contains 0.0100 mole of CH 4 and 0.0400 mole of N 2 at a temperature of 100 o C. What is the pressure, in mm Hg , exerted by this gas mixture? 1. 3.06 mm Hg 2. 0.821 mm Hg 3. 2.33x10 3 mm Hg 4. 624 mm Hg 4. A sample of gas contains 5.60 grams of N 2 and 1.00 gram of H 2 . What is the average molecular weight of this gas mixture? 1. 9.43 2. 15.0 3. 20.6
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4. 24.1 5. What is the density (in grams per liter) of hydrogen gas at 700 mm Hg and 17.0 o C? 1. 0.0387 g/L 2. 0.0774 g/L 3. 0.660 g/L 4. 1.32 g/L 6. Dinitrogen monoxide gas (N 2 O) is collected over water at 26.0 o C and a total pressure of 740 mm Hg. If the gas volume is 285 milliliters, how many grams of N 2 O were collected? 1. 0.480 gram of N 2 O 2. 0.497 gram of N 2 O 3. 0.520 gram of N 2 O 4. 0.534 gram of N 2 O 7. One liter (STP) of xenon gas reacts with two liters (STP) of fluorine gas to produce one liter (STP) of a gaseous compound containing xenon and fluorine. What is the chemical formula for the compound that is formed? 1. XeF 2. XeF 2 3. Xe 2 F 2 4. XeF 4 5. Xe 2 F 4 8. What is the average velocity (meters per second) of argon atoms if the gas temperature is 227 o C? 1. 17.7 m/s 2. 55.5 m/s 3. 376 m/s 4. 532 m/s 5. 559 m/s 6. 3.12x10 5 m/s 9. What is the pressure, in atmospheres, exerted by 8.00x10 21 molecules of SO 2 gas in a 300 milliliter container at 60.0 o C? 1. 0.218 atm 2. 1.21 atm 3. 1.32 atm
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4. 123 atm 10. A sample of moist air at 60.0 o C and a total pressure of 710.0 mm Hg has a relative humidity of 30.0%. What is the partial pressure for O 2 in the sample of moist air? 1.
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This note was uploaded on 04/14/2008 for the course CHEM 1035 taught by Professor Jgdillard during the Fall '07 term at Virginia Tech.

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Test 4, F 07, Form A - Chemistry 1035 Fourth Test FORM A...

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