Chemistry Unit 1

GAS LAWS

100

What's the relationship between pressure and volume?

As the pressure of a gas increases, volume decreases accordingly. P1/V1 = P2/V2

200

What's the relationship between volume and temperature?

Volume increases as temperature increases. 

V1/T1 = V2/T2

300

What's the relationship between temperature and pressure?

As temperature increases, pressure increases.

P1/T1 = P2/T2

400

What is the equation for the ideal gas law?

PV=nRT

500

What is the equation for combined gas law?

P1xV1/T1=P2xV2/T2

VOCAB

100

Average kinetic energy of molecules

Temperature

200

Size of the container

Volume

300

Number in force of molecule collisions

Pressure

400

273K, 0º C 1atm, 760mmHg, 101.3kPa

Standard temperature and pressure

500

When all movement stops

Theoretical temperature

VOLUME

100

The temperature inside a fridge is about 5°C. If a balloon is placed in the fridge that has an initial temperature of 25°C and a volume of .7L, what will the volume of the balloon be when it is fully cooled?

.65L

200

A gas occupies 15.3 L at a pressure of 55mmHg. What is the volume when the pressure is increased to 75 mmHg?

11.22L

300

A gas occupies a volume of 4 liters at 25C and a pressure of 2 atm. If the temp is decreased to 0C and the pressure increased to 4 atm, what will the new volume of the gas be.

Volume = 1.83 liters

400

The volume of a gas-filled balloon is 50L at 35°C and 153 kPa. What volume will the balloon be at STP?

66.94L

500

What volume is occupied by .754 mol of gas at 95.6 kPa and 8°C

18.43L

PRESSURE

100

If you're solving for pressure, what R value do you use?

atm

200

What 3 Factors are directly related to the Pressure of a system

The number of moles, the volume, and the temperature

300

A gas at a pressure of 1 atm, volume of 10 liters, and temperature of 25ºC is compressed to  liters and heated to 50ºC. What will be the final pressure

2.17 atm

400

What pressure is exerted by .00573mol of gas in a 27.8mL container at 11º C?

4.8 atm

500

Why does a notecard stay attached to the cup of water even when flipped over?

The atmospheric pressure pushes on the pressure in the cup. The lack of air molecules in the cup creates an area of low pressure and low collisions.

COVERSIONS

100

Convert -85°C to K

188K

200

Convert 6 atm to mmHg

4560 mmHg

300

Convert 140mmHg to kPa

18.66 kPa

400

Convert 215 kPa to atm

2.12 atm 

500

The atmospheric pressure in a mountainous location is measured to be 613 mm Hg. what is this pressure in atm and in kPa

atm: .807   kPa: 81.7