The diffusion coefficients for species A in metal B are given at two temperatures:| T (°C) | D (m²/s) ||-------|------------------|| 1020 | 8.54 × 10⁻¹⁷ || 1290 | 8.39 × 10⁻¹⁶ |(a) Determine the value of the activation energy \( Q_d \) (in J/mol).\[ \boxed{\phantom{J/mol}} \](b) Determine the value of \( D_0 \).\[ \boxed{\phantom{m²/s\ (Use\ scientific\ notation.)}} \](c) What is the magnitude of \( D \) at 1190°C?\[ \boxed{\phantom{m²/s\ (Use\ scientific\ notation.)}} \]

The given question is solved using the ficks law of diffusion.

The diffusion coefficients for species A in metal B are given at two temperatures: D (m²/s) 8.54 x 10-17 8.39× 10-16 i (b) Determine the value of Do. (a) Determine the value of the activation energy Qd (in J/mol). Mi J/mol i T (°C) (c) What is the magnitude of D at 1190°C? 1020 1290 m²/s (Use scientific notation.) m²/s (Use scientific notation.)

The diffusion coefficients for species A in metal B are given at two temperatures: D (m²/s) 8.54 x 10-17 8.39× 10-16 i (b) Determine the value of Do. (a) Determine the value of the activation energy Qd (in J/mol). Mi J/mol i T (°C) (c) What is the magnitude of D at 1190°C? 1020 1290 m²/s (Use scientific notation.) m²/s (Use scientific notation.)

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Concept explainers

Atomic diffusion in solids

In material science, diffusion can take place in solid, liquid, and gases. In solids, atomic diffusion can take place with the help of thermally activated and randomly vibrating atoms. The atomic diffusion in solids is complex and very slow in comparison to atomic diffusion in liquids and gases because the interatomic distance between the atoms is smaller in solids as compared to liquids and gases.

Question

The diffusion coefficients for species A in metal B are given at two temperatures:

| T (°C) | D (m²/s) |
|-------|------------------|
| 1020 | 8.54 × 10⁻¹⁷ |
| 1290 | 8.39 × 10⁻¹⁶ |

(a) Determine the value of the activation energy \( Q_d \) (in J/mol).

\[ \boxed{\phantom{J/mol}} \]

(b) Determine the value of \( D_0 \).

\[ \boxed{\phantom{m²/s\ (Use\ scientific\ notation.)}} \]

(c) What is the magnitude of \( D \) at 1190°C?

\[ \boxed{\phantom{m²/s\ (Use\ scientific\ notation.)}} \]

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