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

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 in m^2/s

(b) Determine the value of Qd in kJ/mol


(c) What is the magnitude of D? at 850˚C in m^2/s

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