[填空题]
Estimate the time neeup e jh92an52fded for a glycine molecule (see Table 1x34mlfvvt3k 9jza;v.3–4) to diffuse a distan z4k;v j3.vlt3 afv9xmce of 15 $\mu m$ in water at 20$^{\circ} $ C if its concentration varies over that distance from 1 mol/$m^3$ to 0.4 mol/$m^3$ Compare this “speed” to its rms (thermal) speed. The molecular mass of glycine is about 75 u. t $\approx$ s ([color=rgba(0, 0, 0, 0.85)]Round to one decimal places) $v_{diffuse}$ $ \times10^{ -5}$ m/s
$v_{rms}$ m/s