Abbreviations
what does "atm" stand for?
atmosphere
in pV=nRT, what units should n be in?
moles
A balloon contains 2.0 moles of helium at 25°C and 1.0 atm. What is the volume of the balloon?
49 atm
A gas occupies 10.0 L at 310 K and 2.0 kPa. How many moles of gas are present?
.0078 moles
gases have no set _____ or ______
volume, shape
What does "STP" stand for?
Standard temperature and pressure
in pV=nRT, what units should T be in?
kelvin
A balloon contains 2.0 moles of helium at 25 °C and 1.0 atm. What is the temperature of the balloon in K?
298.15
A gas occupies 10.0 L at 300 K and 2.0 kPa. What is the value of R used?
faster
in pV=nRT, what does "P" stand for?
pressure
in pV=nRT, what units should p be in?
atm
A gas cylinder contains 3.5 moles of argon at 22°C and a pressure of 4.5 atm. What is the volume of the cylinder?
21 L
A sealed container holds 32.00 grams of oxygen gas at 37.0°C and a volume of 10.00 L. What is the pressure inside the container in mmHg?
1930 mmHg
If the volume of a bag increases while moles and temperature stay the same, what must happen to the pressure of the gas?
It must decrease
in pV=nRT, what does "n" stand for?
moles of gas
in pV=nRT, what units should V be in?
L
A balloon contains 4.0 grams of Helium at 30°C and 1.2 atm. What is the volume of the balloon?
20 L
A fire extinguisher holds 8.0 L of compressed CO₂ at 150 atm and 25°C. If the CO₂ is released into a room at 1.0 atm and 25°C, what volume will it occupy?
1200 L
gas molecules are relatively ____ apart and don't interact with each other much (low attractive forces)
far
in pV=nRT, what does "R" stand for
gas constant
If given 1.2 atmosphere of a 200 cm3 vessel in pV=nRT, what units should R be in?
L-atm/mol-K
A 5.0 L container holds an unknown gas at 57°C and 1.5 atm. The gas has a mass of 5.59 g. Using the ideal gas law, identify the gas.
Neon
A weather balloon is filled with 1,401 grams of helium at ground level where the temperature is 20.0°C and pressure is 101.3 kPa. At altitude, the balloon expands to 10,500 L and the temperature drops to -55.0 °C. What is the pressure at altitude?
60.4 kPa
what is kinetic energy
the measurement of movement of a molecule