Calculate the value of d at 705°c for the diffusion of some species in a metal for which the values of d0 and qd are 4.5 × 10-5 m2/s and 164 kj/mol, respectively.

The value of D is

Explanation:

Given that,

Temperature = 705°C

Maximum diffusion

Activation energy

We need to calculate the value of D

Using formula of diffusion coefficient

Where, D = diffusion coefficient

= Maximum diffusion coefficient

= Activation energy

T = temperature

R = Gas constant

Put the value into the formula

Hence, The value of D is

true tan speed = ang vel x radius