Understanding Kinetic Energy in Gases

What is the equation for average kinetic energy per molecule in a gas?

• 3/2 times Boltzmann's constant times temperature

• Boltzmann's constant divided by temperature

• 3/2 times temperature divided by Boltzmann's constant

• Temperature divided by Boltzmann's constant

Which constant is used in the calculation of average kinetic energy per molecule?

• Coulomb's constant

• Boltzmann's constant

• Planck's constant

• Gravitational constant

In the context of gases, what does the average kinetic energy per particle represent?

• The energy of the slowest particle

• The energy of the fastest particle

• The total energy of the gas

• The total kinetic energy divided by the number of particles

How can the ideal gas law be used to find the number of particles in a gas?

• By dividing the pressure by the volume

• By using the equation PV = nRT to find n, then multiplying by Avogadro's number

• By subtracting the temperature from the pressure

• By adding the volume to the temperature

What assumption is made about the particles in an ideal gas when calculating average velocity?

• All particles have the same mass

• All particles have different masses

• All particles have infinite mass

• All particles have zero mass

What is the average velocity of argon gas particles at 330 Kelvin?

• 455 meters per second

• 330 meters per second

• 500 meters per second

• 600 meters per second

How is the mass of a single particle of a gas determined?

• By adding the molar mass to Avogadro's constant

• By multiplying the molar mass by Avogadro's constant

• By subtracting Avogadro's constant from the molar mass

• By dividing the molar mass by Avogadro's constant

What is the relationship between total kinetic energy and temperature in an ideal gas?

• They are equal

• They are inversely proportional

• They are directly proportional

• They are unrelated

In the first example problem, what is the temperature of the gas in degrees Celsius if the average kinetic energy is 9.32 x 10^-20 J?

• 427 degrees Celsius

• 273 degrees Celsius

• 4200 degrees Celsius

• 4500 degrees Celsius

What is the internal energy of helium gas in the second example problem?

• 100 joules

• 500 joules

• 300 joules

• 262 joules