The average kinetic energy of the molecules in a gas sample depends only on the temperature, T. However, given the same
Posted: Mon Jul 11, 2022 1:52 pm
The average kinetic energy of the molecules in a gas sample depends only on the temperature, T. However, given the same kinetic energies, a lighter molecule will move faster than a heavier molecule, as shown in the equation for rms speed rms speed= where R = 8.314 J/(mol-K) and M is molar mass in kilograms per mole. Note that a joule is the same as a kilogram-meter squared per second squared (kg-m²/s²). What is the rms speed of N, molecules at 439 K? rms speed: 3RT M What is the rms speed of He atoms at 439 K? rms speed: m/s m/s