Suppose we have a macroscopic amount (~ moles) of argon gas in thermodynamic equilibrium at STP conditions. In this case, the velocities of the gas atoms follow the Maxwell and Boltzmann distribution with very good accuracy. Which of the following statements is/are true? Select one or more: a.When heating a gas, the ratio of the average speed of the molecules to the most probable speed increases. b.Heating the gas would lead to a shift of the most probable speed of the momentum distribution to a lower value, while the relative number of high-speed atoms would increase. c. Replacing argon atoms with helium atoms would lead to a momentum distribution in equilibrium, the most probable momentum of which would shift to a higher value and the relative number of high-speed atoms would increase.

Suppose we have a macroscopic amount (~ moles) of argon gas in thermodynamic equilibrium at STP conditions. In this case, the velocities of the gas atoms follow the Maxwell and Boltzmann distribution with very good accuracy. Which of the following statements is/are true? Select one or more: a.When heating a gas, the ratio of the average speed of the molecules to the most probable speed increases. b.Heating the gas would lead to a shift of the most probable speed of the momentum distribution to a lower value, while the relative number of high-speed atoms would increase. c. Replacing argon atoms with helium atoms would lead to a momentum distribution in equilibrium, the most probable momentum of which would shift to a higher value and the relative number of high-speed atoms would increase.