Samples of Ne(g) and Ar(g) are each held at 298 K in separate
CHEMISTRY · Single correct · AP · Chemistry · Properties of Substances and Mixtures · Properties of Substances and Mixtures
Problem
Samples of Ne(g) and Ar(g) are each held at 298 K in separate, identical containers. Which statement most accurately compares the average kinetic energies and rms speeds of the gas particles?
(a) Both samples have the same average kinetic energy, but Ar atoms have the greater rms speed.
(b) Both the average kinetic energy and the rms speed are greater for Ar atoms.
(c) Both samples have the same average kinetic energy, but Ne atoms have the greater rms speed.
(d) The rms speeds of Ne and Ar are identical at the same temperature, but Ar atoms have the greater average kinetic energy.