Gas laws review

Convert the following to torr: 1.25

• 25 torr

• 950 torr

• 125 torr

• 780 torr

At a pressure of 405 kPa, the volume of a gas is 6.00 cm3. Assuming the temperature remains constant, at what pressure will the new volume be 4.00 cm3?

• 2 atm

• 890 torr

• 608 kPa

• 508 kPa

 

The pressure exerted on a 240.0 mL sample of hydrogen gas at constant temperature is increased from 0.428 atm to 0.724 atm.  What will the final volume of the sample be?

• 78mL

• 142 mL

• 99mL

• 110mL

 

At 189 K, a sample of gas has a volume of 32.0 cm3. What volume does the gas occupy at 242 K

• 41.0 cm3

• 38.5 cm3

• 110 cm3

• 48 K

 

 

If the final volume of a gas at 4.000 atm is 80.00 mL after being put under pressure at 20.00 mL, what was the initial pressure of the gas in torr?

• 113539.7 kPa

• 12160 torr

• 7800 torr

• 13 atm

 

Nitrogen gas exerts a pressure of 3.45 atm.  When the pressure is changed to 25.4 atm, its volume is 53.9 L.  What was the original volume?

• 345 L

• 1197 cm3

• 118 L

• 397 L

  A gas has an initial pressure of 2065 mmHg and temperature of 416 K.  What is the new pressure in atm if the temperature is cooled to 382 K and volume remains constant?

• 2.50 atm

• 3 atm

• 1.50 atm

• 7 atm

 

A toy balloon has an internal pressure of 1.05 atm and a volume of 5.0 L. If the temperature where the balloon is released is 20°C, what will happen to the volume when the balloon rises to an altitude where the pressure is 0.65 atm and the temperature is -15°C?

Determine the pressure change when a constant volume of gas at 1.00 atm is heated from 20.0˚C to 30.0˚C.

If a gas is cooled from 323.0 K to 273.15 K and volume is kept constant what final pressure would result if the original pressure was 750.0 mm Hg?