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The diffusion coefficients for carbon in nickel are given at two temperatures: T(˚C) D(m2/s) 600 5.5...

The diffusion coefficients for carbon in nickel are given at two temperatures:

T(˚C) D(m2/s)
600 5.5 × 10-14
700 3.9 × 10-13


(a) Determine the value of D0.
(b) Determine the value of Qd.
(c) What is the magnitude of D? at 880˚C?

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