A gas occupies 28.5 L at 80.0 kPa and 25.0 ⁰C. What volume will it occupy at STP (101.3 kPa, 273 K)?

A 0.350 g sample of nitrogen gas (N₂) at 90.5 K exerts a pressure of 55.0 kPa. What volume will it occupy?

What volume (in L) will 3.21 mol  of methane gas occupy at 25.0 oC and 92.1 kPa?

A sample of Freon−12 (CF2Cl2) occupies 10.0 L at 279 K and 151.20 kPa. Find its volume at STP.

A gas has a volume of 42.0 L at STP conditions. What will the volume be at 2.5atm and 20.0 C?

An average gas fireplace uses about 200 gallons (760,000 cm3) of propane gas per year. Assume that the propane, C3H8, behaves as a perfect gas for the conditions of this problem, which are 1.00 atm and 22°C. What is the mass of gas used?

Calculate the pressure of 12.0 grams of O2 gas with a volume of 775mls at a temperature of 35.0oC PV = nRT  (R=0.08206atm.L/moles.K)

0.504 g of a noble gas occupies a 250. mL container at -23 ºC and 105.0 kPa. Identify the gas.

A sample of oxygen is collected over water and has a volume of 6.19 ml. The pressure of the collected "wet" gas is 67.27 kPa and the temperature is 20°C. What will the volume of the "dry" oxygen be in mL if the pressure is changed to 91.56 kPa and the temperature is changed to -22.5°C? (The Vapor pressure of water at 20°C is 2.333 kPa) (Answer to two decimal places and no units in your answer)

A gas occupies 265 mL at 26°C and a pressure of 758 mm Hg. The temperature decreases to 18°C and the pressure drops to 719 mm Hg. What is the final volume of the gas?