[填空题]
Estimate the time needed for a glycine mole0.dlir 7 8ddr z7x-sab7cijr8:ees( 6b kc v0,8iii hestb* -4oidvu4cule (see Table 13–4) to diffuse a distan ie-eh6* ,0c8ives ds:ii 4bkvto 4u(bce 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