Gases composed of monatomic, nonpolar molecules will act most like
- heavy gases
- liquids
- ideal gases
- diatomic molecules
If a perfume bottle is opened at one end of a room, the odor will quickly be detected on the other side of the room. Why?
- The molecules are condensing.
- The molecules are diffusing.
- The molecules are being compressed.
- Your sense of smell improves.
What is the SI unit of force?
- the kilogram
- the torr
- the atm
- the newton
Twenty-seven degress Celcius is equal to
- 273 K
- 300 K
- 59 K
- 101 K
The spontaneous mixing of particles of two substances due to random motion is known as
- diffusion
- effusion
- confusion
- ellusion
Convert 1.25 atm to mm Hg.
- 30 mm Hg
- 950 mm Hg
- 760 mm Hg
- 1250 mm Hg
The spontaneous blank looks among chemistry students' faces when given yet another stoichiometry problem is known as
- confusion
- effusion
- ellusion
- diffusion
Which of the following substances would have the highest density?
- Hg(g)
- H2O(l)
- H2O(g)
- Hg(l)
Force per unit of surface area is the definition of
- force
- kinetic energy
- pressure
- a newton
20 K is equal to
- 52°C
- -52°C
- -253°C
- 253°C
An ideal gas
- exists only at STP
- exists only at low pressures
- does not exist
- exists only at high temperatures
Convert 456 torr to standard atmospheres.
- 1.499 atm
- 1.20 atm
- 0.600 atm
- 1 atm
Convert 3.20 atm into kPa.
- 101.325 kPa
- 324 kPa
- 760 kPa
- 151.98 kPa
What is the relationship between the mass of a gas particle and the rate at which it diffuses through another gas?
- the larger the particle, the slower it diffuses
- the more numerous the molecules, the faster they diffuse
- the larger the particle, the faster it diffuses
- there is no relationship
STP is
- the stuff you put in your gas tank
- standard temperature and pressure
- something thought provoking
- nonexistent
A manometer is an instrument used to measure
- parental pressure
- the pressure of an enclosed gas
- the atomospheric pressure
- peer pressure
Which of the following is true of a real gas, and not of an ideal gas?
- all particles have the same kinetic energy
- all particles move in the same direction
- particles cannot diffuse
- the particles exert attractive forces on one another
A barometer is an instrument used to measure
- the pressure of an enclosed gas
- parental pressure
- peer pressure
- the atomospheric pressure
Which of the following is standard pressure?
- 760 kPa
- 1 torr
- 760 atm
- 760mm Hg
40.4 torr is equal to how many kPa?
- 4.75 kPa
- 2.48 kPa
- 5.38 kPa
- 3.20 kPa
In order for pressure to increase when force remains constant,
- surface area must increase
- Newtons must increase
- surface area must decrease
- Newtons must decrease
Air slowly leaking from a very small hole in its container is an example of
- diffusion
- condensation
- dispersion
- effusion
760 torr is equal to
- 1 mm Hg
- 760 mm Hg
- 1 kPa
- 101 atm
Which of the following is standard temperature?
- 100°C
- 273°C
- 0°C
- 0 kelvin
Which of the following substances would have the lowest density?
- Hg(g)
- H2O(l)
- H2(g)
- H2O(g)