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Unformatted text preview: del rosario (ad27492) – Chapter 5 – smeureanu – (0436) 1 This printout should have 35 questions. Multiplechoice questions may continue on the next column or page – find all choices before answering. 001 10.0 points What is the pressure inside a system when the systemside column in an open mercury manometer is 75.0 mm lower than the atmo sphere side when the atmospheric pressure is 735 mm Hg? 1. 108 kPa 2. 10.0 kPa 3. 75 kPa 4. 820 kPa 5. 88.0 kPa 002 10.0 points What is the correct order of increasing den sity? The temperature and pressure are same for all three samples. 1. NO 2 , N 2 , NH 3 2. N 2 , NO 2 , NH 3 3. NH 3 , N 2 , NO 2 4. N 2 , NH 3 , NO 2 5. NO 2 , NH 3 , N 2 003 10.0 points What volume of hydrogen (STP) is produced by dissolving onehalf mole of aluminum in sulfuric acid? ? Al(s) + ? H 2 SO 4 (aq) → ? Al 2 (SO 4 ) 3 (aq) + ? H 2 (g) 1. 16.8 L 2. 4.50 L 3. 51.2 L 4. 41.0 L 5. 23.5 L 004 10.0 points Assuming that the volumes of carbon diox ide and of propane are measured under the same experimental conditions, what volume of carbon dioxide is produced by the complete combustion of 25 L of propane? Answer in units of L. 005 10.0 points Determine the molecular weight of a com pound given the gas phase data: mass of 27 . 64 g, temperature of 18.4 ◦ C, pressure of 956 torr, volume of 14 . 32 L. 1. 24.9 g/mol 2. 0.046 g/mol 3. 191 g/mol 4. 36.7 g/mol 5. 279 g/mol 006 10.0 points What pressure is required to reduce 62 mL of a gas at standard conditions to 16 mL at a temperature of 25 ◦ C? Answer in units of atm. 007 10.0 points A 6.35 L sample of carbon monoxide is col lected at 55.0 ◦ C and 0.892 atm. What volume will the gas occupy at 1.05 atm and 59.0 ◦ C? 1. 6.10 L 2. 6.68 L 3. 4.82 L 4. 5.46 L 5. 1.96 L del rosario (ad27492) – Chapter 5 – smeureanu – (0436) 2 008 10.0 points A mixture of gases at 25 ◦ C and 1 atm pressure contains 10.0 L of oxygen gas, 20.0 L of nitrocontains 10....
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This note was uploaded on 04/05/2010 for the course CHEMISTRY 0436 taught by Professor Smeureanu during the Spring '10 term at CUNY Hunter.
 Spring '10
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