chapter 5 gas laws pt.1
What is the density of neon gas at STP? Multiple choice question. 0.901 g/L 1.11 g/L 1.11 g/mL 0.901 g/mL
0.901 g/L
Calculate the density of 1.00 mole of O2(g) at STP. Multiple choice question. 0.700 g/L 0.714 g/L 1.43 g/L
1.43 g/L
At standard temperature and pressure (STP), what volume does 1 mole of gas occupy? Multiple choice question. 1.0 L Not enough information is provided. 22.4 L 22.4 mL
22.4L
The molar volume of any gas at STP is _________L.
22.4L
Gases behave nonideally due to _____. Multiple choice question. repulsive forces within molecules differences in nuclear masses attractive forces that exist between molecules
attractive forces that exist between molecules
A sample of neon gas contains 3.0 mol in a volume of 5.0 L. Calculate the new volume if the amount of neon is increased to 6.0 mol at constant temperature and pressure. Multiple choice question. 3.6 L 7.5 L 2.5 L 10. L
10.L
If a gas has a volume of 10.0 L at a temperature of 100 oC at 1 atm, what is the new pressure if the volume changes to 1.0 L and the temperature is decreased to 10 oC?
13atm 7.6atm 1.0atm 10. atm
If 1.2 moles of a gas occupy a volume of 2.0 L at 300 K, what is the pressure of the gas? Multiple choice question. 15 atm 0.4 atm 720 atm
15atm
If a balloon has 2.0 L of helium at 273 K and 1.0 atm of pressure, what is the new volume if the temperature is raised to 300 K and the pressure is lowered to 0.5 atm? Multiple choice question. 1.1 L 4.4 L 9.1 L 0.90 L
4.4 L
At 298 K and 1.00 atm, what volume (in liters) will 5.00 × 102 g of N2(g) occupy? Multiple choice question. 1.22 × 104 L 17.8 L 435 L
435 L
Calculate the volume occupied by 2.75 moles of nitrogen gas at STP. Multiple choice question. 61.6 L 0.0162 L 22.4 L 8.15 L
61.6L
Match the gas law with its corresponding equation. Instructions Charles's law Boyle's law Combined gas law P1V1=P2V2 V1/T1=V2/T2 P1V1/T1=P2V2/T2
Charles's law V1/T1=V2/T2 Boyle's law P1V1=P2V2 Combined gas law P1V1/T1=P2V2/T2
Which physical state typically is compressible, easily diffuses, has lower densities? Multiple choice question. Liquids Solids Gases
Gases
According to Avogadro's law, if the pressure and temperature are held constant, what is the volume directly proportional to? Moles Size of the gas particles Molar mass Mass
Moles
Select all that apply According to Avogadro's law, select all the statements that are true. Multiple select question. V1/n1 = V2n2 V1/n1 = V2n2 When the number of moles of a gas increase, the volume increases. The number of moles of a gas is inversely proportional to the volume.
V1/n1 = V2/n2 When the number of moles of a gas increase, the volume increases.
True or false: Interactive forces between gas particles are totally absent in all samples of a gas.
false
According to Avogadro's law, if the pressure and temperature are held constant, what is the volume directly proportional to? Multiple choice question. Size of the gas particles Moles Molar mass Mass
moles
Often, amounts of gases are compared at a standard_______ and, _________abbreviated as STP.
pressure and temperature
The ideal gas constant, R, is_________ L⋅atm⋅K-1⋅mol-1. Report your answer to three significant figures.
0.0821
Select all of the following correct statements referring to the properties of ideal gases. -When gas molecules collide with the walls of a container, they exert a pressure on the container. -Gases are expandable and compressible. -Gases readily diffuse through each other. -Gases behave most ideally at lower temperatures. -Gases have generally higher densities than liquids. -Gases behave most ideally at lower pressures.
Gases are expandable and compressible. Gases readily diffuse through each other. Gases behave most ideally at lower pressures.
In order to solve gas law problems, the equations are rearranged to isolate the unknown quantity on one side of the equation. Select all the equations that correctly rearrange Boyle's law. Multiple select question. V2 = P1V1/P2 V1 = P2V2/P1 P2 = P1V2/V1 P1 = P2V2/V1
V2 = P1V1/P2 V1 = P2V2/P1 P1 = P2V2/V1
The ideal gas law relates all the properties of gases into a single equation. Select all the properties that are represented in the ideal gas law. Multiple select question. R (Universal gas constant) Volume (V) Temperature (T) Pressure (P) Mass (m)
Volume (V) Temperature (T) Pressure (P)
The ideal gas law relates all the properties of gases into a single equation. Select all the properties that are represented in the ideal gas law. Multiple select question. Volume (V) R (Universal gas constant) Temperature (T) Pressure (P) Mass (m)
Volume (V) Temperature (T) Pressure (P)
Dalton's law states that the total pressure of a gas mixture is the sum of the________ pressures of its component gases.
partial
When using the ideal gas law, the correct value of R must be used. If given pressure in atm, volume in liters, and temperature in K, what value of R should be used based on the units given? Multiple choice question. 62.4 mL atm/mol K 62.4 L mm Hg/mol K 0.0821 LmmHg/molK 0.0821 L atm/mol K
0.0821 L atm/mol K
A balloon contains 1.0 mol of helium that occupies a volume of 5.0 L. The helium inside the balloon was released, at constant temperature and pressure, until a volume of 2.0 L was reached. How many moles of helium are left in the balloon? Multiple choice question. 0.10 mol 2.5 mol 0.40mol 10. mol
0.40 mol
How many moles of argon gas are contained in a 10.0-L container at standard temperature and pressure? Multiple choice question. 224 mol 2.24 mol 0.446 mol Cannot determine
0.446 mol
Select the conditions that correctly describe the standard temperature and pressure. Multiple select question. 0 K 1 atm 273 K 760 mm Hg
1 atm 273 K 760 mm Hg
If a 5.0 L container of helium gas has a pressure of 1.0 atm, what is the new volume if the pressure is increased to 5.0 atm? 25 L 1.0 atm 1.0 L 5.0 L
1.0L
At 315 K and 0.780 atm, what mass (in g) of Ne is contained in 275 L? R = 0.0821 L⋅atm/K⋅mol Multiple choice question. 0.121 g 167 g 2.43 g 8.29 g
167 g
A mixture of two gases has a total pressure of 8.0 atm; if one gas in the mixture has a partial pressure of 6.0 atm, the other gas has a partial pressure of _____ atm. Multiple choice question. 1.3 0.75 2.0
2.0
A volume of gas occupies 25.0 L at 100 oC. What volume does the gas occupy at 200 oC? 50.0 L 18.3 L 31.7 L 63.4 L 25.0 L
31.7 L
Select all the statements that correctly describe gases. Multiple select question. A component of a gas in a mixture exerts the same pressure that it would if present alone under the same conditions. A component of a gas exerts a different pressure in a mixture than it would alone under the same conditions. Gas particles are closely packed together and have strong attractive forces holding the particles together. Each component of a gas mixture exerts a pressure called its partial pressure.
A component of a gas in a mixture exerts the same pressure that it would if present alone under the same conditions. Each component of a gas mixture exerts a pressure called its partial pressure.
Select the equation that represents the ideal gas law. Multiple choice question. PV = R/nT PiVi = PfVf PV = nT PV = nRT
PV = nRT
The ideal gas law can be rearranged to solve for any value: P, V, n, or T. Select all the equations that correctly describe the ideal gas law. Multiple select question. PV/nR = T n = RT/PV V = nR/TP V = nPRT
PV/nR = T V = nRT/P
If a system contains a mixture of oxygen and nitrogen gases with partial pressures Poxygen and Pnitrogen, what is the total pressure of the system? Multiple choice question. The pressure of the system is equal to the partial pressure of oxygen. There is not enough information provided to calculate the total pressure. The pressure of the system is equal to the sum of the partial pressures of oxygen and nitrogen.
The pressure of the system is equal to the sum of the partial pressures of oxygen and nitrogen.
Select all the statements that apply to Charles's law. Multiple select question. The volume of a gas increases as temperature increases for a fixed amount of gas at constant pressure. The volume of a gas decreases as temperature increases for a fixed amount of gas at constant pressure. Charles's law relates volume and temperature in kelvins. The volume of a gas is proportional to its temperature in degrees Celsius or kelvin.
The volume of a gas increases as temperature increases for a fixed amount of gas at constant pressure. Charles's law relates volume and temperature in kelvins.
