Gases AP CHEM

Standard temperature and pressure (STP) is defined as

• O ^.C and 1.0 atm pressure
• 0^.C and 273 mmHg pressure
• 0K and 1.0 atm pressure
• 0K and 760 mmHg pressure

Compressing a gas makes the pressure _______.

• increase
• decrease
• stay the same
• I don't know

If a balloon is cooled what will happen to the volume?

• Volume will increase
• Volume will decrease
• Volume will not change

Tags

NGSS.MS-PS1-4

In order to solve gas law calculations, temperature must be measured in:

• Fahrenheit
• Celsius
• Kelvin
• It doesn't matter 

568 mL of chlorine at 25° C will occupy what volume at -25° C while the pressure remains constant? 

• 473 mL
• 682 mL
• 130 mL
• 568 mL

Determine the Kelvin temperature required for 0.0470 mol of gas to fill a balloon to 1.20 L under .998 atm pressure. 

• 0 K 
• 107 K 
• 207 K 
• 307 K 

At 25 degrees Celsius, a gas is approximately 3 L at standard pressure. What is the new volume if the pressure increases to 3 atm and the temperature stays constant?

• 9 L

• 1 L

• 9 atm

• 1 atm

Gas pressure is caused by

• gas molecules colliding with surfaces
• gas molecules condensing to a liquid
• gas molecules hitting other gas molecule
• barometers

Tags

NGSS.MS-PS2-1

A container holds three gases: oxygen, carbon dioxide, and helium. The partial pressures of the three gases are 2.00 atm, 3.00 atm, and 4.00 atm, respectively. What is the total pressure inside the container?

• 2 atm
• 4 atm
• 3 atm
• 9 atm

• Helium
• Nitrogen 
• Oxygen
• All have the same number of molecules