Combined Gas Law Lesson

A sample of gas has a volume of 20.0 mL at STP. What will the volume be if the temperature is changed to 546 K and the pressure is changed to 2.0 atm.?

• 20 ml

• 40 ml

• 60 ml

• 10 ml

• none are correct

If I initially have a gas at a pressure of 12.0 atm, a volume of 23.0 liters, and a temperature of 200. K, and then I raise the pressure to 14.0 atm and increase the temperature to 350. K, what is the new volume of the gas

• 12.8 liters

• 34.5 liters

• 51 liters

• 6.4 liters

• none are correct

If I have 27 liters of gas at a temperature of 67 ⁰C and a pressure of 93 atm, what will be the pressure of the gas if I raise the temperature to 94 ⁰C and decrease the volume to 12 liters?

• 225.9 atm

• 238.9 atm

• 114.5 atm

• 149.1 atm

• none are correct

I have an unknown volume of gas held at a temperature of 200 K in a container with a pressure of 60.0 atm. If by increasing the temperature to 325 K and decreasing the pressure to 20.0 atm causes the volume of the gas to be 29 liters, how many liters of gas did I start with?

• 1.8 liters

• 67.2 liters

• 15.8 liters

• 5.9 liters

• none are correct

A sample of a certain gas has a volume of 452 mL at 711 mm Hg and 26.0 C. What would be the volume of this same sample of gas if it were measured at STP?

• 1.7 ml

• 2.4 ml

• 649 ml

• 386 ml

• none are correct

A gas at a temperature of 99.8 0 C occupies a volume of 641 mL. What will be the volume at a temperature of 5.00 0 C, assuming no change in pressure

• 1785 ml

• 32.1 ml

• 478 ml

• 16.1 ml

• none are correct

What is the final pressure of a gas initially has a pressure of 10 atm at 50 L if the volume s now 25 L?

• 5 atm

• 10 atm

• 20 atm

• 40 atm

• none are correct

A sample of ideal gas is heated in a 2 L vessel at a temperature of 320 Kelvin. The pressure in the vessel is 2.5 atm. What is the new pressure in the vessel if the volume is halved and the temperature is reduced to 250 Kelvin?

• 4.6

• 1.7

• 3.9

• 5.9

• none are correct

A certain sample of gas has a volume of 0.452 L measured at 87^oC and 0.620 atm. What is its volume at STP

• 280 ml

• 213 ml

• 3 ml

• .003 ml

• none are correct

A cylinder contains helium gas with a volume of 2.60 L at 20 C and 768 mm Hg. If the balloon ascends to an altitude where the helium pressure is 614 mm Hg, and the temperature drops to 10 C, what is the volume of the gas?

• 6.28 l

• 1.6 l

• 3.14 l

• 0.8 l

• none are correct