What does the Maxwell-Boltzmann curve tell us?
The probability of a particle's direction
The probability of a particle's curve
The probability of a particle's speed
he probability of massive particles
Why can't all of the gas particles in a container have very high or very low speeds?
Because as particles collide they both increase their energy
Because as particles collide, a gain in kinetic energy other
Because there is not enough pressure inside of a closed cont
Because there is not enough pressure inside
Why would a scientist have difficulty observing the behavior of an ideal gas?
Because an ideal gas is theoretical, and hence not real.
Because all ideal gases are invisible.
Because an ideal gas cannot be compressed.
Because an ideal gas is made of molecules that cant be seen
Which of the following is TRUE about most gases?
They expand to completely fill their container.
Their particles are very close together.
They have a fixed volume.
All of their particles are the same size.
1000 mL of a gas at 15 atm is compressed to 500 mL. What is its new pressure?
2 atm
30 atm
5 atm
3 atm
A sample of hydrogen has a volume of 25 L under a pressure of 5 atm. What will the pressure of this gas be if the volume were decreased to 5 L?
5 atm
10 atm
25 atm
15 atm
Under non-ideal conditions, why was the pressure lower using the van der Waals equation?
The attraction between the molecules increases.
The attractive forces between the molecules makes em smaller
The attractive forces between the molecules makes em larger
The pressure was greater.
What does b represent in the van der Waals equation?
The volume of the gas overall
The volume of the container
The volume of the gas molecules
The volume of the container not filled by the gas
If someone is measuring pressure, they might use any of the following units EXCEPT _____.
Atmospheres
Millimeters of mercury
Pounds
Torr
If you know the temperature, volume, and pressure of a gas, how would you rearrange the ideal gas equation to find the number of moles?
Divide PV by both T and R.
Divide PV by n.
Divide PV by T only.
Multiply PV by both T and R.
In the ideal gas equation, what does R represent?
The ideal gas constant
Number of moles
Pressure
Temperature
A container has a volume of 53.9 L. Assuming it is at STP, how many moles of gas particles does it contain?
1,200 mol
2.41 mol
0.416 mol
76.3 mol
Avogadro's law shows the relationship between _____.
temperature and pressure
temperature and number of particles
pressure and number of particles
volume and number of particles
In the van der Waals equation, what does a represent?
The ambient temperature
The volume of the gas molecules
The attraction between the gas molecules
The number of gas particles in moles
Assuming pressure and temperature are held constant, then what happens to the volume of a non-rigid container when the number of molecules in the container is doubled?
The volume doubles.
It decreases to half its original volume.
The volume stays the same.
There is not enough information given to determine this.
If a 22.4 L container is holding 1.00 mole of a gas at 273 kelvins, then what is its pressure?
2.00 atm
1.00 atm
22.2 atm
22.4 atm
