At 300 K, what is the approximate ratio of the rms speed of molecules to that of…

CHEMISTRY · Single correct · AP · Chemistry · Properties of Substances and Mixtures · Properties of Substances and Mixtures

Problem

At 300 K, what is the approximate ratio

\dfrac{u_{\text{rms}}(\text{H}_2)}{u_{\text{rms}}(\text{O}_2)}

of the rms speed of

\text{H}_2

molecules to that of

\text{O}_2

molecules? (Molar masses:

\text{H}_2 = 2\,\text{g mol}^{-1}

\text{O}_2 = 32\,\text{g mol}^{-1}

.) (a)

16

(b)

4

(c)

2

(d)

8