Questions for General, Organic, and Biological Chemistry Structures of Life, 5th Edition - Chapter (8)

General, Organic, and Biological Chemistry Fifth Edition Karen Timberlake Gases Chapter 8 Clicker Questions 1. According to the kinetic molecular theory, if you increase the temperature of a gas without changing the volume of the gas, the particles of the gas will _______. strike the container walls more often strike the walls with less force lose kinetic energy increase in size Chapter 8 – Gases 1. According to the kinetic molecular theory, if you increase the temperature of a gas without changing the volume of the gas, the particles of the gas will _______. strike the container walls more often strike the walls with less force lose kinetic energy increase in size Chapter 8 – Gases 760 mmHg 760 atm 1 mmHg 1 atm 2. If a pressure is reported as 1 torr, it is also equal to _______. Chapter 8 – Gases 760 mmHg 760 atm 1 mmHg 1 atm 2. If a pressure is reported as 1 torr, it is also equal to _______. Chapter 8 – Gases 3. If a pressure is reported as 1.25 atm, what is that pressure in milliliters of mercury? 23.9 mmHg 37.4 mmHg 608 mmHg 950 mmHg Chapter 8 – Gases 3. If a pressure is reported as 1.25 atm, what is that pressure in milliliters of mercury? 23.9 mmHg 37.4 mmHg 608 mmHg 950 mmHg Chapter 8 – Gases 4. Cyclopropane, C3H6, is a general anesthetic. A 5.0-L sample has a pressure of 5.0 atm. The volume of the anesthetic given to a patient at a pressure of 1.0 atm is _______. 0.04 L 1.00 L 2.50 L 25.00 L Chapter 8 – Gases 4. Cyclopropane, C3H6, is a general anesthetic. A 5.0-L sample has a pressure of 5.0 atm. The volume of the anesthetic given to a patient at a pressure of 1.0 atm is _______. 0.04 L 1.00 L 2.50 L 25.00 L Chapter 8 – Gases 5. If a gas occupies 2 L at 3 atm, how many liters will it occupy at 6 atm if the temperature is not changed? 1 L 2 L 3 L 4 L Chapter 8 – Gases 5. If a gas occupies 2 L at 3 atm, how many liters will it occupy at 6 atm if the temperature is not changed? 1 L 2 L 3 L 4 L Chapter 8 – Gases 6. If a gas occupies 2 L at 273 °C, what is the volume at 0 °C if the pressure does not change? 0.5 L 1 L 2 L 4 L Chapter 8 – Gases 0.5 L 1 L 2 L 4 L Chapter 8 – Gases 6. If a gas occupies 2 L at 273 °C, what is the volume at 0 °C if the pressure does not change? 10 K 63 K 119 K 745 K 7. If a gas occupies 5 L at 298 K, what temperature is needed to reduce the volume to 2 L if the pressure does not change? Chapter 8 – Gases 10 K 63 K 119 K 745 K 7. If a gas occupies 5 L at 298 K, what temperature is needed to reduce the volume to 2 L if the pressure does not change? Chapter 8 – Gases 3.06 atm 34.7 psi 4.34 atm 64 psi Chapter 8 – Gases 8. An automobile tire is initially at 32 psi (2.17 atm) at a temperature of 25 °C. What is the pressure after 100 mi of driving if the tire’s temperature is now 50 °C and the tire’s volume remains constant? 3.06 atm 34.7 psi 4.34 atm 64 psi Chapter 8 – Gases 8. An automobile tire is initially at 32 psi (2.17 atm) at a temperature of 25 °C. What is the pressure after 100 mi of driving if the tire’s temperature is now 50 °C and the tire’s volume remains constant? 9. A sample of helium gas has a volume of 6.50 L at a pressure of 845 mmHg and a temperature of 25 °C. The pressure of the gas, in atmospheres, when the volume is 12.8 L and the temperature is 47 °C is _______. 0.307 atm 0.605 atm 1.06 atm 1.65 atm Chapter 8 – Gases 0.307 atm 0.605 atm 1.06 atm 1.65 atm Chapter 8 – Gases 9. A sample of helium gas has a volume of 6.50 L at a pressure of 845 mmHg and a temperature of 25 °C. The pressure of the gas, in atmospheres, when the volume is 12.8 L and the temperature is 47 °C is _______. 10. A sample of methane gas has a volume of 10 L at a pressure of 1.5 atm and a temperature of 20 °C. What volume does the gas occupy if the pressure is lowered to 0.9 atm at a temperature of 40 °C? 6.4 L 16 L 18 L 33 L Chapter 8 – Gases 6.4 L 16 L 18 L 33 L Chapter 8 – Gases 10. A sample of methane gas has a volume of 10 L at a pressure of 1.5 atm and a temperature of 20 °C. What volume does the gas occupy if the pressure is lowered to 0.9 atm at a temperature of 40 °C? 11. The conditions expressed in the abbreviation STP do not include ______. 0 °C 760 mmHg 1 atm 1 torr Chapter 8 – Gases 11. The conditions expressed in the abbreviation STP do not include ______. 0 °C 760 mmHg 1 atm 1 torr Chapter 8 – Gases 12. The molar volume of argon gas (atomic number 18) is _______. 4 L 16 L 18 L 22.4 L Chapter 8 – Gases 12. The molar volume of argon gas (atomic number 18) is _______. 4 L 16 L 18 L 22.4 L Chapter 8 – Gases 13. What volume does 76 g of fluorine gas occupy at STP? 11.2 L 22.4 L 44.8 L 89.6 L Chapter 8 – Gases 13. What volume does 76 g of fluorine gas occupy at STP? 11.2 L 22.4 L 44.8 L 89.6 L Chapter 8 – Gases 14. How many moles of Ne occupy 2.0 L at STP? 0.05 mole 0.09 mole 1.0 mole 2.0 moles Chapter 8 – Gases 14. How many moles of Ne occupy 2.0 L at STP? 0.05 mole 0.09 mole 1.0 mole 2.0 moles Chapter 8 – Gases 15. A 25.0-g sample of nitrogen, N2, has a volume of 50.0 L and a pressure of 630 mmHg. The temperature of the gas is ______. 284 K 373 K 451 K 565 K Chapter 8 – Gases 15. A 25.0-g sample of nitrogen, N2, has a volume of 50.0 L and a pressure of 630 mmHg. The temperature of the gas is ______. 284 K 373 K 451 K 565 K Chapter 8 – Gases 16. What volume will 2.5 moles of H2 gas occupy at a pressure of 1.3 atm and a temperature of 35 °C? 0.021 L 0.18 L 5.5 L 49 L Chapter 8 – Gases 0.021 L 0.18 L 5.5 L 49 L Chapter 8 – Gases 16. What volume will 2.5 moles of H2 gas occupy at a pressure of 1.3 atm and a temperature of 35 °C? 17. Which gas has the highest partial pressure in the atmosphere? CO2 H2O O2 N2 Chapter 8 – Gases 17. Which gas has the highest partial pressure in the atmosphere? CO2 H2O O2 N2 Chapter 8 – Gases 18. A mixture of three gases, A, B, and C, has a total pressure of 8.5 atm. If the pressure of gas A is 2.4 atm and the pressure of gas B is 1.7 atm, what is the pressure of gas C? 4.4 atm 6.1 atm 6.8 atm 12.6 atm Chapter 8 – Gases 18. A mixture of three gases, A, B, and C, has a total pressure of 8.5 atm. If the pressure of gas A is 2.4 atm and the pressure of gas B is 1.7 atm, what is the pressure of gas C? 4.4 atm 6.1 atm 6.8 atm 12.6 atm Chapter 8 – Gases 19. In certain lung ailments, such as emphysema, there is a decrease in the ability of oxygen to diffuse into the blood. The partial pressure of oxygen in the blood would _______. be lower than normal be higher than normal remain the same as normal be toxic Chapter 8 – Gases 19. In certain lung ailments, such as emphysema, there is a decrease in the ability of oxygen to diffuse into the blood. The partial pressure of oxygen in the blood would _______. be lower than normal be higher than normal remain the same as normal be toxic Chapter 8 – Gases 20. At a restaurant, a customer chokes on a piece of food. You put your arms around the person’s waist and use your fists to push up on the person’s abdomen, an action called the “Heimlich maneuver.” The volume of the chest and lungs would _____. increase decrease remain the same double in size Chapter 8 – Gases 20. At a restaurant, a customer chokes on a piece of food. You put your arms around the person’s waist and use your fists to push up on the person’s abdomen, an action called the “Heimlich maneuver.” The volume of the chest and lungs would _____. increase decrease remain the same double in size Chapter 8 – Gases