A container with 0.10 mol of helium (A = 4) and a container with 1.0 mol of argon (A = 40) are placed in thermal contact with each other. The helium has an initial temperature of 200 °C and the argon an initial temperature of 0 °C. After they reached thermal equilibrium is the Vrms of helium greater than, less than or equal to the Vrms of argon? Explain your answer.