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HOMEWORK_3

# HOMEWORK_3 - 7 A mixture of gases contains 0.75 mol N 2...

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CHM 2045 HOMEWORK # 3 Spring 2007 Instructor: Dr. Fayiga DUE Feb. 22, 2007 STP – standard temperature and pressure Standard temperature – 0 o C Standard pressure- 1 atm Molar volume of an ideal gas at STP is 22.41L 1. A gas occupies a volume of 410mL at 27 o C and 740 mmHg pressure. Calculate the volume the gas will occupy at STP. 2. What volume will 1.25 mol of N 2 occupy at STP? 3. Calculate the density of F 2 gas at STP. 4. What is the volume of 0.75 mol Kr at 25 o C and 725 torr pressure? 5. What is the molar mass of a gas if 1.15g occupies 0.215 L at 0.813 atm and 30.0 o C? 6. How many moles of N 2 gas occupy 5.20 L at 250 K and 0.500 atm ?
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Unformatted text preview: 7. A mixture of gases contains 0.75 mol N 2 , 0.30 mol O 2 and 0.15 mol CO 2 . If the total pressure is 1.56 atm, what is the partial pressure of each component? 8. a) Calculate the partial pressure of gases in a mixture containing 4.5g each of CO 2 , N 2 , and O 2 . b) Calculate the total pressure of the system in a 5L flask at 25 o C. 9. a) Calculate the density of NO 2 gas at 0.85 atm and 45 o C. b) Calculate the molar mass of a gas if 2.5g occupies 0.875L at 685 torr and 40 o C. 10. What is the total P exerted by a mixture of 2g H 2 and 8g N 2 at 273K in a 10L vessel?...
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