Gas Laws and More

How many moles of gas occupy 98 L at a pressure of 2.8 atmospheres and a temperature of 292 K?

• 11 moles of gas

• 1 moles of gas

• 22 moles of gas

• 30 moles of gas

A balloon is filled with 35.0 L of helium in the morning when the temperature is 20.0 ⁰C. By noon the temperature has risen to 45.0 ⁰C. What is the new volume of the balloon?

• 380 L

• 38.0 L

• 3.0 L

• 8.0 L

A balloon that can hold 85 L of air is inflated with 3.5 moles of gas at a pressure of 1.0 atmosphere. What is the temperature in Celcius (⁰C) of the balloon?

• 296 K = 230 C

• 212 K = -61 C

• 0 K = -273 C

• 296 K = 23 C

A helium balloon with an internal pressure of 1.00 atm and a volume of 4.50 L at 20.0⁰ C is released. What volume will the balloon occupy at an altitude where the pressure is 0.600 atm and the temperature is –20.0 ⁰C?

• 648 L

• 68 L

• 6.48 L

• 48 L

A 75 L container holds 62 moles of gas at a temperature of 215 ⁰C. What is the pressure in atmospheres inside the container?

• 33 atm

• 3 atm

• 330 atm

• 13 atm

There are 135 L of gas in a container at a temperature of 260 ⁰C. If the gas was cooled until the volume decreased to 75 L, what would the temperature of the gas be?

• 26 K

• 96 K

• 496 K

• 296 K

In gas laws the temperature must be in

• Kelvin

• Celcius

• Torr

• Atmosphere

What is the formula for Boyle's Law?

• P₁V₁=P₂V₂
• P₁V₁/P₂V₂
• P₁V₂=P₂V₁
• P₁/V₁=P₂/V₂

When Pressure increases then the Volume must...

• Increase
• decrease

What type of relationship to pressure and volume have?

• direct
• inverse
• no relationship
• I don't know