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Question-3. A piece of titanium (Ti) sheet in a thickness of 5 mm was exposed to a nitrogen-rich gas atmosphere on one side and a nitrogen-deficient atmosphere on the other side at 850 °C. After having reached steady-state, the metal sheet was quickly cooled to room temperature. The nitrogen concentrations at the two surfaces were determined to be 0.02 and 0.0018 wt%. The densities for nitrogen (N) and Ti are 0.808 g/cm³ and 4.5 g/cm³, respectively. Answer the following questions: (a) Convert the nitrogen concentrations from weight percent to kilograms per meter cubed. (b) Compute the diffusion coefficient if the diffusion flux is 2.58 × 106 kg/m²-s.

Question-3. A piece of titanium (Ti) sheet in a thickness of 5 mm was exposed to a nitrogen-rich gas atmosphere on one side and a nitrogen-deficient atmosphere on the other side at 850 °C. After having reached steady-state, the metal sheet was quickly cooled to room temperature. The nitrogen concentrations at the two surfaces were determined to be 0.02 and 0.0018 wt%. The densities for nitrogen (N) and Ti are 0.808 g/cm³ and 4.5 g/cm³, respectively. Answer the following questions: (a) Convert the nitrogen concentrations from weight percent to kilograms per meter cubed. (b) Compute the diffusion coefficient if the diffusion flux is 2.58 × 106 kg/m²-s.

Introduction to Chemical Engineering Thermodynamics
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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Question-3. A piece of titanium (Ti) sheet in a thickness of 5 mm was exposed to a nitrogen-rich gas atmosphere on one side and a nitrogen-deficient atmosphere on the other side at 850 °C. After having reached steady-state, the metal sheet was quickly cooled to room temperature. The nitrogen concentrations at the two surfaces were determined to be 0.02 and 0.0018 wt%. The densities for nitrogen (N) and Ti are 0.808 g/cm³ and 4.5 g/cm³, respectively. Answer the following questions: (a) Convert the nitrogen concentrations from weight percent to kilograms per meter cubed. (b) Compute the diffusion coefficient if the diffusion flux is 2.58 × 10-6 kg/m²-s.
Transcribed Image Text:Question-3. A piece of titanium (Ti) sheet in a thickness of 5 mm was exposed to a nitrogen-rich gas atmosphere on one side and a nitrogen-deficient atmosphere on the other side at 850 °C. After having reached steady-state, the metal sheet was quickly cooled to room temperature. The nitrogen concentrations at the two surfaces were determined to be 0.02 and 0.0018 wt%. The densities for nitrogen (N) and Ti are 0.808 g/cm³ and 4.5 g/cm³, respectively. Answer the following questions: (a) Convert the nitrogen concentrations from weight percent to kilograms per meter cubed. (b) Compute the diffusion coefficient if the diffusion flux is 2.58 × 10-6 kg/m²-s.
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