Gas Laws assignment and quiz
Which law is based on the graph that is shown below? mc001-1.jpg Boyle's law Charles's law Dalton's law Gay-Lussac's law
Boyle's law
If two gases are present in a container, the total pressure in the container is equal to... the sum of the pressures that are exerted by each of the two gases. twice the sum of the pressures that are exerted by the individual gases. the sum of the pressures that each gas would exert if they occupied twice the volume. the sum of the pressures that each gas would exert if they occupied half the volume.
the sum of the pressures that are exerted by each of the two gases.
A and B are two gases that are mixed together; 2.50 mol A is mixed with 0.85 mol B. If the final pressure of the mixture is 1.75 atm, what are the partial pressures of A and B?
1.31 atm A 0.44 atm B
A gas cylinder contains 2.0 mol of gas X and 6.0 mol of gas Y at a total pressure of 2.1 atm. What is the partial pressure of gas Y? Use mc017-1.jpg. 0.50 atm 1.6 atm 2.1 atm 2.8 atm
1.6 atm
Which law states that the volume and absolute temperature of a fixed quantity of gas are directly proportional under constant pressure conditions? Boyle's law Charles's law Dalton's law Gay-Lussac's law
Charles's law
Which law is described by saying that doubling the absolute temperature will double the pressure of a sample of gas in a rigid container? Boyle's law Charles's law Dalton's law Gay-Lussac's law
Gay-Lussac's law
The absolute temperature of a gas is increased four times while maintaining a constant volume. What happens to the pressure of the gas? It decreases by a factor of four. It increases by a factor of four. It decreases by a factor of eight. It increases by a factor of eight.
It increases by a factor of four.
A container holds 6.4 moles of gas. Hydrogen gas makes up 25% of the total moles in the container. If the total pressure is 1.24 atm. What is the partial pressure of hydrogen? Use mc032-1.jpg. 0.31 atm 0.93 atm 5.2 atm 31 atm
0.31 atm
How will the volume of a gas be affected if the pressure is tripled, but the temperature remains the same? Why might a rubber raft burst if it is left in the sun on a summer day?
it is decreased to one third of its original volume temperature increases, causing interior pressure to increase
Which equation represents the combined gas law?
P1V1/T1 = P2V2/T2
If you decreased the volume of a sample of gas by a factor of three while maintaining a constant pressure, how would the absolute temperature of the gas be affected? A gas at 300 K and 4.0 atm is moved to a new location with a temperature of 250 K. The volume changes from 5.5 L to 2.0 L. What is the pressure of the gas at the new location? What is the partial pressure of 0.50 mol Ne gas combined with 1.20 mol Kr gas at a final pressure of 730 torr?
it would decrease threefold 9.2 atm 215 torr
A balloon that had a volume of 3.50 L at 25.0°C is placed in a hot room at 40.0°C. If the pressure remains constant at 1.00 atm, what is the new volume of the balloon in the hot room? Use mc005-1.jpg. 2.19 L 3.33 L 3.68 L 5.60 L
3.68 L
Five gases combined in a gas cylinder have the following partial pressures: 3.00 atm (N2), 1.80 atm (O2), 0.29 atm (Ar), 0.18 atm (He), and 0.10 atm (H). What is the total pressure that is exerted by the gases? Use mc020-1.jpg. 5.08 atm 5.19 atm 5.27 atm 5.37 atm
5.37 atm
Complete the table by filling in the missing information.
A = pressure, volume B = temperature, moles of gas C = Charles's law D = V = kT E = temperature, pressure F = P = kT G = number of moles only
Match one graph shown at right to each of the gas laws named below. Charles's law Gay-Lussac's law Boyle's law
d b e
Suppose that 0.25 mole of gas C was added to the mixture without changing the total pressure of the mixture. How does the addition of C to the mixture change the mole fraction of gas A? How does the addition of C to the mixture change the partial pressure of gas A? What is the partial pressure of C?
decreases it decreases it 0.12 atm C
A scientist is measuring the pressure that is exerted by each of the following gases in the atmosphere: carbon dioxide, oxygen, and nitrogen. Which term most likely describes what she is measuring? final pressure atmospheric pressure combined pressure partial pressure
partial pressure
The incomplete table below shows selected characteristics of gas laws. Name Variables Constants Equation ? Pressure, volume Temperature, moles of gas PV = k Charles's law ? ? V = kT Gay-Lussac's law ? ? ? Combined gas law ? ? mc025-1.jpg What are the variables in Gay-Lussac's law? pressure and volume pressure, temperature, and volume pressure and temperature volume, temperature, and moles of gas
pressure and temperature
The incomplete table below shows selected characteristics of gas laws. Name Variables Constants Equation ? ? ? PV = k Charles's law ? ? V = kT ? Temperature, pressure ? P = kT Combined gas law Pressure, temperature, volume ? ? Which constants would most likely be filled in the first row of the table? temperature and moles of gas volume and temperature pressure and volume pressure and moles of gas
temperature and moles of gas
