At , estimate the ratio of the root-mean-square speeds of helium atoms (atomic mass )…

CHEMISTRY · Subjective · A Level · Chemistry · Amount of substance · Amount of substance

Problem

400\,\text{K}

, estimate the ratio

v_{\text{rms, He}}/v_{\text{rms, O}_2}

of the root-mean-square speeds of helium atoms (atomic mass

4\,\text{u}

) to oxygen molecules

\mathrm{O}_2

(molecular mass

32\,\text{u}

), assuming both gases behave ideally.