Chemistry Atoms First 1st Edition By Burdge Overby – Test Bank

Chapter 11: Gases

1. Which of the following is not a gas at room temperature?
A) NH3 B) CO2 C) I2 D) CH4 E) H2
Ans: C Difficulty: Easy

2. Which is not a property of a gas?
A) Density varies with temperature
B) Assumes the shape an volume of its container
C) Are compressible
D) Density is larger than that of a liquid
E) Form homogeneous mixtures with one another
Ans: D Difficulty: Easy

3. Which of the following is/are characteristic(s) of gases?
A) High compressibility
B) Relatively large distances between molecules
C) Formation of homogeneous mixtures regardless of the nature of gases
D) A and B
E) A, B, and C
Ans: E Difficulty: Easy

4. Which of the following defines pressure?
A) volume/density
B) temperature  density
C) density/gravitational constant
D) height  density  gravitational constant
E) gravity  density  area  height
Ans: D Difficulty: Easy

5. Which of the following is the definition of pressure?
A) area/force D) height  volume.
B) force  area E) gravity  density  temperature
C) force/area
Ans: C Difficulty: Easy

6. A pressure that will support a column of Hg to a height of 256 mm would support a column of water to what height? The density of mercury is 13.6 g/cm3; the density of water is 1.00 g/cm3.
A) 348 cm B) 1.00  102 ft C) 18.8 mm D) 33.8 ft E) 76.0 cm
Ans: A Difficulty: Medium

7. Hydrogen gas exerts a pressure of 466 torr in a container. What is this pressure in atmospheres (1 atm = 101,325 Pa = 760 torr)?
A) 0.217 atm B) 0.466 atm C) 0.613 atm D) 1.63 atm E) 4.60 atm
Ans: C Difficulty: Easy

8. The pressure of hydrogen sulfide gas in a container is 35,650 Pa. What is this pressure in torr (1 atm = 101,325 Pa = 760 torr)?
A) 46.91 torr B) 267.4 torr C) 351.8 torr D) 3612 torr E) 27090 torr
Ans: B Difficulty: Easy

9. The pressure of sulfur dioxide in a container is 159 kPa. What is this pressure in atmospheres (1 atm = 101,325 Pa = 760 torr)?
A) 0.209 atm B) 0.637 atm C) 1.57 atm D) 21.2 atm E) 15900 atm
Ans: C Difficulty: Easy

10. The air pressure in a volleyball is 75 psi. What is this pressure in torr
(1 psi = 14.7 atm, 1 atm = 101,325 Pa = 760 torr)?
A) 520 torr B) 562 torr C) 3900 torr D) 7600 torr E) 75000 torr
Ans: C Difficulty: Easy

11. If the atmospheric pressure in Denver is 0.88 atm then what is this in mmHg (1 atm = 101,325 Pa = 760 torr, 1 torr = 1 mmHg)?
A) 151.5 mmHg D) 8.92  104 mmHg
B) 1.16  10–3 mmHg E) 668.8 mmHg
C) 863.6 mmHg
Ans: E Difficulty: Easy

12. A flask containing neon gas is connected to an open-ended mercury manometer. The open end is exposed to the atmosphere, where the prevailing pressure is 745 torr. The mercury level in the open arm is 50. mm below that in the arm connected to the flask of neon. What is the neon pressure, in torr?
A) –50. torr D) 795 torr
B) 50. torr E) none of these choices is correct
C) 695 torr
Ans: C Difficulty: Medium

13. A flask containing argon gas is connected to a closed-ended mercury manometer. The closed end is under vacuum. If the mercury level in the closed arm is 230. mm above that in the arm connected to the flask, what is the argon pressure, in torr?
A) –230. B) 230. C) 530. D) 790. E) none of these choices is correct
Ans: B Difficulty: Medium