Chem Gas Laws

A sample of a gas (5.0 mol) at 1.0 atm is expanded at constant temperature from 10.0 L to 15.0 L. The final pressure is ___ atm.

• 1.5 atm

• 15 atm

• 0.67 atm

• 3.3 atm

• 7.5 atm

A sample of He gas (2.35 mol) occupies 57.9 L at 300.0 K and 1.00 atm. The volume of this sample is ___L at 423 K and 1.00 atm.

• 0.709 L

• 57.9 L

• 41.1 L

• 81.6 L

• 1.41 L

Gases generally have

• low density

• high density

• closely packed particles

• no increase in volume when temperature is increased

• no decrease in volume when pressure is increased

A gas sample is held at constant pressure. The gas occupies 3.62 L of volume when the temperature is 21.6°C. Determine the temperature at which the volume of the gas is 3.42 L.

• 312K

• 278K

• 20.4K

• 295K

• 552K

If container A is 10L and is under 5 atm of pressure and container B is 10L, but under 7 atm of pressure, what is true about the number of particles inside the containers?

• can not tell from the information
• they contain the same number of particles
• container A has less particles
• container B has less particles

When the temperature is constant (k) inside a balloon, if you add pressure on it, the volume will ..... 

• Decrease
• Increase
• Not Change at all
• Particles will solidify 

Determine the number of moles in a container of gas at STP with a volume of 99.2 L. 

• 2222.08 moles
• 4.43 moles
• 22.4 moles 
• 76.8 moles

A 7.50 liter sealed jar at 18 °C contains 0.125 moles of oxygen and 0.125 moles of nitrogen gas. What is the pressure in the container?

• 7.38 atm
• 0.796 atm
• 0.684 atm
• 0.398 atm

Determine the initial temperature of a random gas when the initial volume is 2.2 L and it is cooled to 88K with a volume of 0.85 L. 

• 0.029 K
• 0.021 K
• 227.76 K
• 34 K

What is the pressure exerted by 5.00 moles of nitrogen gas contained in a 30.0 Liter container at 25.0 °C?

• 3670 atm

• 0.245 atm

• 4.08 atm

• 605 atm