## Chemistry and Chemical Reactivity (9th Edition)

From Graham's Law: $\sqrt{\dfrac{\bar{u_A^2}}{\bar{u_B^2}}}=\sqrt{\dfrac{M_B}{M_A}}$ $\sqrt{x^2/(4.28×10^4\ cm/s)^2}=\sqrt{32.0\ g/mol/44.0\ g/mol}$ $x=3.65×10^4\ cm/s$