CHEMISTRY · Single correct · AP · Chemistry · Properties of Substances and Mixtures · Properties of Substances and Mixtures
Problem
Three sealed, rigid containers each hold 0.50 mol of a different noble gas at the temperatures listed below.
Sample A: Ar(g) at 400 K
Sample B: Ne(g) at 300 K
Sample C: He(g) at 200 K
Which option correctly ranks the samples from lowest to highest root-mean-square (rms) molecular speed?
(a) C<B<A
(b) A<B<C
(c) B<C<A
(d) A<C<B