Gas Laws Homework

A sample of ammonia gas, or NH3, has a volume of 15.0 L at 300 K and 1.2 atm. Calculate its mass. Hint: First solve for moles (n), and then convert moles to grams.

• 12.5 g

• 0.73 g

• 5.8 g

• 15.6 g

A gas takes up a volume of 17.0 liters, has a pressure of 2.30 atm, and a temperature of 299 K. If I raise the temperature to 350.0 K and lower the pressure to 1.50 atm, what is the new volume of the gas?

• 25.6 liters

• 30.5 liters

• 35.4 liters

• 40.1 liters

If I have 72.0 L of carbon dioxide gas held at a pressure of 3.40 atm and a temperature of 225 K, how many moles of gas do I have?

• 3 moles

• 13 moles

• 7 moles

• 1 mole

If I have 17 L of gas at a pressure of 88.89 atm, what will be the pressure of the gas if I decrease the volume to 12 L and keep temperature constant?

• 125.9 atm

• 88.9 atm

• 62.8 atm

• 44.5 atm

If I have 2.40 moles of gas held at a temperature of 370 K and in a container with a volume of 4.5 L, what is the pressure of the gas?

• 8.1 atm

• 5.8 atm

• 10.0 atm

• 16.2 atm

If I have 2.9 L of gas at a pressure of 5 atm and a temperature of 323 K, what will be the temperature of the gas if I decrease the volume of the gas to 2.4 L and decrease the pressure to 3 atm?

• 160 K

• 273 K

• 350 K

• 300 K

A 64 gram sample of O₂ gas has a volume of 9.1 L and a pressure of 0.75 atm. What is the temperature of the gas?

• 42 K

• 298 K

• 310 K

• 75 K

If I have 21.00 moles of gas held at a pressure of 78.00 atm and a temperature of 900.0 K, what is the volume of the gas? 

• 19.89 L

• 274.4 L

• 54.76 L

• 125.8 L

Calculate the mass of 15.0 L of NH₃ at 300.K and 1.18 atm.

• 22.7 g

• 17.5 g

• 12.3 g

• 0.72 g

A sample of krypton gas has a temperature of 322°K and a volume of 22L. If the volume increases to 30L what is the new Temperature? Round to a whole number and do not include the unit.