Gas Laws

What is absolute zero?

• 0 K, where there is no molecular movement, and it is the coldest temperature possible.

• -273.15 °C, the temperature at which water freezes.

• A temperature that can only be reached in a vacuum.

• The temperature at which all gases become liquids.

What is the significance of the gas constant (R) in the ideal gas law?

• R is a proportionality constant that relates the pressure, volume, temperature, and number of moles of a gas.

• R is the universal gas constant that only applies to ideal gases at high temperatures.

• R is a variable that changes with the type of gas being measured.

• R is a constant that represents the density of a gas under standard conditions.

What is the formula for Charles' Law?

• V1/T1 = V2/T2, where V is volume and T is temperature.

• V1 * T1 = V2 * T2, where V is volume and T is temperature.

• V1 + T1 = V2 + T2, where V is volume and T is temperature.

• V1 - T1 = V2 - T2, where V is volume and T is temperature.

What does Charles' Law state?

• As Volume goes up, temperature goes up.

• As Pressure goes up, volume goes down.

• As Temperature goes down, pressure goes up.

• As Volume goes down, temperature remains constant.

What is the effect of increasing the number of moles of gas in a container at constant temperature and volume?

• The pressure decreases.

• The pressure remains constant.

• The pressure increases.

• The volume increases.

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

• 3.00 atm

• 4.08 atm

• 5.00 atm

• 2.50 atm

What is the ideal gas law equation?

• PV = nRT

• PV = nR/T

• P = nRT/V

• PV = nT/R

What happens to the volume of a helium balloon when placed in the freezer?

• The balloon's volume will increase.

• The balloon's volume will stay the same.

• The balloon's volume will decrease.

• The balloon will pop.

How is pressure defined in the context of gases?

• Pressure is the weight of the gas particles in a container.

• Pressure is created by the force of the gas particles impacting the walls of the container.

• Pressure is the temperature of the gas particles in a container.

• Pressure is the volume of the gas particles in a container.

What is the concept of partial pressure in a mixture of gases?

• The pressure exerted by a gas in a mixture is equal to the total pressure of the mixture.

• The partial pressure of a gas is the pressure it would exert if it occupied the entire volume alone.

• Partial pressure is the pressure of a gas when it is cooled to absolute zero.

• Partial pressure is the pressure difference between two gases in a mixture.