[填空题]
Estimate the time neede )r vb1 sq7mjy7i4t3psv+o b3cd for a glycine molecule (see Table 13–4p0k qyw 49uq kp3d;2mf) to diffuse a distancemqd wq20;k 9pf4yu3pk 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