Neon (atomic mass = ) and xenon (atomic mass = ) are placed in separate

CHEMISTRY · Multi-part · AP · Chemistry · Properties of Substances and Mixtures · Properties of Substances and Mixtures

Problem

Neon (atomic mass =

20\,\text{u}

) and xenon (atomic mass =

131\,\text{u}

) are placed in separate, identical containers held at an absolute temperature of

400\,\text{K}

. Both gases behave ideally. (a) Compute the ratio

v_{\text{rms,Ne}} : v_{\text{rms,Xe}}

400\,\text{K}

. (b) Determine the numerical value of the root-mean-square speed of a neon atom at

400\,\text{K}

. (c) At what temperature would xenon atoms have the same root-mean-square speed you calculated for neon in part (b)?