Which of the following best describes the average kinetic energy of the argon atoms…
CHEMISTRY · Single correct · AP · Chemistry · Properties of Substances and Mixtures · Properties of Substances and Mixtures
Problem
Which of the following best describes the average kinetic energy of the argon atoms in a 1.0-mol sample at 350 K compared with the average kinetic energy in an identical sample at 250 K?
(a) It is lower at 350 K because average kinetic energy is inversely proportional to absolute temperature.
(b) It is the same at both temperatures because both samples contain the same amount of substance, 1.0mol of Ar.
(c) It is higher at 350 K because average kinetic energy is directly proportional to absolute temperature.
(d) It cannot be determined without knowing the pressure of each sample, since kinetic energy depends on both temperature and pressure.