hw8 - Guerra, Thomas Homework 8 Due: Oct 31 2007, midnight...

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1 This print-out should have 33 questions. Multiple-choice questions may continue on the next column or page – fnd all choices beFore answering. The due time is Central time. 001 (part 1 oF 1) 10 points Divers know that the pressure exerted by the water increases about 100kPa with every 10.2m oF depth. This means that at 10.2m below the surFace, the pressure is 201kPa; at 20.4m below the surFace, the pressure is 301kPa; and so Forth. IF the volume oF a balloon is 2 . 4 L at STP and the temperature oF the water remains the same, what is the volume 38 . 08 m below the water’s surFace? Answer in units oF L. 002 (part 1 oF 1) 10 points A gas is enclosed in a 10.0 L tank at 1200 mm Hg pressure. Which oF the Following is a reasonable value For the pressure when the gas is pumped into a 5.00 L vessel? 1. 0.042 mm Hg 2. 600 mm Hg 3. 2400 mm Hg 4. 24 mm Hg 003 (part 1 oF 1) 10 points At standard temperature, a gas has a volume oF 246 mL. The temperature is then increased to 118 C, and the pressure is held constant. What is the new volume? Answer in units oF mL. 004 (part 1 oF 1) 10 points A sample oF gas in a closed container at a temperature oF 97 C and a pressure oF 9 atm is heated to 378 C. What pressure does the gas exert at the higher temperature? Answer in units oF atm. 005 (part 1 oF 1) 10 points A gas at 1 . 81 × 10 6 Pa and 18 C occu- pies a volume oF 356 cm 3 . At what tem- perature would the gas occupy 531 cm 3 at 3 . 18 × 10 6 Pa? Answer in units oF C. 006 (part 1 oF 1) 10 points A sample oF ideal gas occupies 250 mL at 25 C and 740 torr. What is its volume at STP? 1. 235 mL 2. 250 mL 3. 223 mL 4. 266 mL 5. 280 mL 007 (part 1 oF 1) 10 points What is the percent yield iF 4.51 moles oF CH 4 produces 16 L oF CO 2 at STP? CH 4 + 2O 2 CO 2 + 2H 2 O 1. 1.26% 2. 15.8% 3. 36.4% 4. 6.31% 5. 78.1% 008 (part 1 oF 1) 10 points IF I have 44.8 liters oF nitrogen gas at standard temperature and pressure, how much will it weigh? 1.
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This note was uploaded on 05/06/2008 for the course CH 301 taught by Professor Fakhreddine/lyon during the Spring '07 term at University of Texas at Austin.

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hw8 - Guerra, Thomas Homework 8 Due: Oct 31 2007, midnight...

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