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Gas Law Practice Test
Terms in this set (40)
If 4 moles of a gas are added to a container that already holds 1 mole of a gas? how will the pressure change inside the container?
c (the pressure will be 5 times higher)
The average kinetic energy of the particles of a substance
c (is directly proportional to the temperature of the substance)
Which of the following gases will effuse the most rapidly?
When the product of the pressure and volume are constant, which of the following gas laws is being followed?
If a balloon is heated, what happens to the volume of te air in the balloon iif the pressure is constant?
d (it increases)
The volume of a gas is reduced from 4 L to 0.5 L while the temperature is held constant. How does the gas pressure change?
d (it increases by a factor of eight)
How is the ideal gas law usually written?
What happens to the Kelvin temperature of a gas if pressure is doubled?
a (the temperature is doubled)
Why does the pressure inside a contianer of gas increase if more gas is added to the container?
a (There is an increase in the # of collisions between particles and the walls of the container)
Which of these changes would NOT cause an increase in the pressure of a contained gas?
b (the volume of the container is increased)
If the volume of a container of air is reduced by 1/2, what happens to the partial pressure of oxygen within the container?
b (it is doubled)
If a balloon is squeezed, what happens to the pressure of the gas inside the balloon?
a (it increases)
What does the ideal gas law allow a scientist to calculate that the other gas laws do not?
d (# of moles)
The combined gas law relates which of the following?
d (temperature, pressure, and volume)
What is one standard atmosphere of pressure in kilopascals?
c (101.3 kPa)
When the ratio of the volume and Kelvin temperature gas are constant, which of the following gas laws is being followed?
What is sublimation?
a (a solid going directly to a gas)
If the volume of a container of a gas is doubled, what will happen to the pressure inside the container?
a (The pressure will be 1/2 the original pressure)
Under what conditions of temperature and pressure is the behavior of real gases most like that of the ideal gases?
b (high temperature and low pressure)
If a balloon is heated, what happens to the pressure of the air inside the balloon if the volume remains constant?
d (it increases)
When the Kelvin temperature of an enclosed gas doubles, the particles of the gas
b (move faster)
At a certain temperature and pressure, 0.20 moles of carbon dioxide has a volume of 3.1 L. A 3.1 L sample of hydrogen at the same temperature and pressure
c (contains the same # of molecules)
What is the SI unit of pressure?
What instrument is normally used to measure atmospheric pressure?
Standard conditions when working with gases are defined as
b (all of these)
Which law can be used to calculate the # of moles of a contained gas?
c (ideal gas law)
If the atmospheric pressure on Mt Everest is 1/3 the atmospheric pressure at sea level, the partial pressure of oxygen on Everest is
c (1/3 its pressure at sea level)
Why is a gas easier to compress than a liquid or a solid?
c (the volume of a gas's particles is small compared to the overall volume of the gas)
The volume of a gas is doubled while the temperature is held constant. How does the gas pressure change?
a (It is reduced by 1/2)
In general, for a gas at a constant volume
b (the pressure of the gas is directly proportional to its temperature in kelvins)
What happens to the partial pressure of oxygen in a sample of air if the temperature increased?
a (It increases)
If a sealed syringe is heated, in which direction will the syringe plunger move?
As the temperature of the gas in a balloon decreases, which of the following occurs?
c (the average kinetic energy of the gas decreases)
What happens to the pressure of a gas inside a container if the Kelvin temperature of the gas tripled?
d (The pressure is tripled)
If a sealed syringe is plunged into cold water, in which direction will the syringe piston slide?
When the ratio of the pressure and Kelvin temperature is constant, which of the following gas laws are being followed?
Why does air escape from a tire when the tire valve is opend?
c (the pressure outside the tire is lower that the pressure inside the tower)
With which temperature scale is temperature directly proportional to the average kinetic energy?
Which of the following statements is part of the kinetic theory?
d (all of the above)
What happens to the range of energies of the particles in matter when the temperature is increased?
b (the range of energies becomes broader)
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