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Abbreviations
Units
The Math
The Math Part 2
Gas Characteristics
100

what does "atm" stand for?

atmosphere

100

in pV=nRT, what units should n be in?

moles

100

A balloon contains 2.0 moles of helium at 25°C and 1.0 atm. What is the volume of the balloon?

49 atm

100

A gas occupies 10.0 L at 310 K and 2.0 kPa. How many moles of gas are present?

.0078 moles

100

gases have no set _____ or ______

volume, shape

200

What does "STP" stand for?

Standard temperature and pressure 

200

in pV=nRT, what units should T be in?

kelvin

200

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

200

A gas occupies 10.0 L at 300 K and 2.0 kPa. What is the value of R used?

8.314
200
The speed of gas particles relative to liquid particles is _________________.

faster

300

in pV=nRT, what does "P" stand for?

pressure

300

in pV=nRT, what units should p be in?

atm

300

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

300

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

300

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

400

in pV=nRT, what does "n" stand for?

moles of gas 

400

in pV=nRT, what units should V be in?

L

400

A balloon contains 4.0 grams of Helium at 30°C and 1.2 atm. What is the volume of the balloon?

20 L

400

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

400

gas molecules are relatively ____ apart and don't interact with each other much (low attractive forces)

far

500

in pV=nRT, what does "R" stand for

gas constant 

500

If given 1.2 atmosphere of a 200 cm3 vessel in pV=nRT, what units should R be in?

L-atm/mol-K

500

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

500

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

500

what is kinetic energy

the measurement of movement of a molecule