The activation energy for the diffusion of carbon in chromium is 111,000 J/mol. Calculate the diffusion coefficient at 1100 K (827C), given that D at 1400 K (1127C) is 6.25 1011 m2/s

Explanation:

As the formula is as follows.

          D =

where,   D = diffusion coefficient

            = constant

            T = temperature

            R = gas constant

          = activation energy

For T = 1400 K,

For T = 1100 K,

Now,

      = exp (2.6)

                                 = 13.46

                   =

Thus, we can conclude that the diffusion coefficient at 1100 K is .

explanation: it gains negative electrons, therefore becoming negatively charged. as charge cannot be created, nor destroyed, only transferred, this leaves the wool positive. now that they have opposite charges, the two items attract.