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The diffusion coefficients for nickel in iron are given at two temperatures, as follows: (a) Determine the values of D0 and the activation energy Qd.

The diffusion coefficients for nickel in iron are given at two temperatures, as follows: (a) Determine the values of D0 and the activation energy Qd. (b) What is the magnitude of D at 1300C(1573K)

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