Review Gas Laws & Equations

Three gases, Argon, N₂ and H₂ are mixed in a 500L container. Argon has a pressure of 255 torrs, N₂ has a pressure of 228 torrs and H₂ has pressure of 752 torrs. What is the total pressure in the container?

• 483 torrs

• 270 torrs

• 1235 torrs

• 760 torrs

The partial pressure of gas X is 340 torr. The partial pressure of gas Y is 264 torr. The partial pressure of gas Z is 100 torr. What is the total pressure exerted by the gases in this system? 

• 76 torr
• 440 torr
• 604 torr
• 704 torr

What does STP stand for?

• Standard Temperature and Pressure
• 1.0 mmHg and 273 degree Kelvin
• 1.0 degree Celcius and 0 atm
• 1.0 atm 273 degree Celcius

A scientist records 8.0 moles of gas. The scientist does not check the pressure of this gas. At a later time the scientist measures the volume of gas to be 150 ml and the new number of moles of gas to be 48. What was the orginal volume of the gas? (Hint: Similar to #69 of HW)

• 25 ml

• 0.39 ml

• 2.56 ml

• 2.5 ml

Calculate the volume that a 0.323 mol sample of a gas will occupy at 265 K and a pressure of 0.900 atm.

• 7.18 L

• 7.81 L

• 4.63 L

• 4.36 L

What pressure, in atm, is exerted by 2.50 L of gas containing 1.35 mol at 320 K?

• 14.19 atm

• 16.53 atm

• 18.42 atm

• 22.54 atm