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Chapter 5: Diffusion Qu 2 Nitrogen from a gaseous phase is to be diffused into pure iron at 800C. If the surface concentration is maintained

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Chapter 5: Diffusion Qu 2 Nitrogen from a gaseous phase is to be diffused into pure iron at 800C. If the surface concentration is maintained at 0.78wt% Nitrogen, what will be the concentration 3mm from the surface after 18h ? The diffusion coefficient for nitrogen in iron at 800C is 3.21011m2/s. Express your answer to three significant figures. Do not include the units

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