Properties of Gases
What is standard temperature in Kelvin?
273
What variable is held constant when using Boyle's Law?
Temperature
What variable is held constant when using Charles' Law?
Pressure
What variable should be placed in the blank to complete the ideal gas equation: P___=nRT? Include the correct unit too!
Volume in L
Which basic properties makes gases behave different from solids or liquids?
No fixed shape, no fixed volume.
What is standard pressure in atm?
1 atm
What is the equation for Boyle's law?
What variable is held constant when using Gay-Lussac's Law?
Volume
At what temperature would 3.25 moles of O2 gas have a pressure of 1.15 atm and in a 31.0 L tank?
134 K
1.7 L of gas is collected at 1.2 atm. What volume does the gas occupy if the pressure changes to 0.7 atm? Temperature is constant.
2.9L
When temperature is constant, what happens to volume when the pressure decreases?
Volume Increases
Calculate the total pressure of a gas mixture containing 30 mmHg of Hydrogen, 79 mmHg of Carbon dioxide, and 51 mmHg of Water vapor.
160 mm Hg
Oxygen gas in a sealed container was measured to a temperature of 18oC and a pressure of 3.0 atm. At what temperature will the pressure reach 3.5 atm? Assume constant volume and leave your final answer in Kelvin.
339.5 K
A helium-filled balloon has a volume of 25.0 L at 36°C and 1.08 atm. What pressure will the gas exert on the balloon at a volume of 16.0L and at 17°C?
1.58 atm
Given a mixture of a gas containing Nitrogen, Neon, Argon, and Chlorine with a total pressure of 175 torr. Nitrogen has a pressure of 49 torr. Neon has a pressure of 10 torr. Chlorine has a pressure of 31 torr. Determine the pressure of Argon.
85 Torr
When pressure is held constant, what happens to the volume when temperature increases?
It increases
A sample of nitrogen gas occupies 350mL at 1.3 atm. If the volume of the gas decreases to 150mL, what will the new pressure be? Assume constant temperature.
3.0 atm
If 640mL of helium is measured at 44oC, what will the temperature of the gas be at a volume of 260mL? Assume constant pressure and keep your final answer in Kelvin.
129 K
What volume would 7.32 moles of F2 gas occupy if it had a pressure of 1.15 atm at 31oC?
159 L
A container of neon gas has a volume of 40.0 L at 21.6°C and 1.37 atm. What volume will it have at 0.855 atm and 3.10°C?
60.1 L
Tom Brady is trying to defend himself from deflategate. He is being accused by the NFL of deflating footballs from their standard pressure in playoff games for his advantage. Before the game, footballs are kept inside a warm closet in the Patriots' locker room. How might Tom Brady use his knowledge of chemistry gas laws to explain to the NFL why the footballs seemed deflated during their recent win on a cold January Sunday?
According to Gay-Lussac's law, the relationship between temperature and pressure are directly related. As the temperature dropped, the air pressure inside the football automatically dropped too because when temperature decreases, pressure decreases.
23.7 mL of gas is collected at standard pressure. What volume does the gas occupy if the pressure changes to 864 mmHg? Temperature is constant.
20.8mL
A gas is collected at 13oC and occupies 340.0 mL. What is the gas volume at standard temperature if pressure remains constant?
324.5 mL
What pressure is being exerted by 21.07 g of N2 gas at 55°C in a 1,200mL container?
16.9 atm
What will the temperature of 45.7 g of Cl2 gas be in a 567mL container at 9.25 atm?
99.0 K