A sheet of steel 1.8 mm thick has nitrogen atmospheres on both sides at 1200°C and is permitted to achieve a steady-state diffusion condition. The diffusion coefficient for nitrogen in steel at this temperature is 6 x 10-1" m²/s, and the diffusion flux is found to be 1.2 x 107 kg/m²-s. Also, it is known that the concentration of nitrogen in the steel at the high-pressure surface is 4 kg/m². How far into the sheet from this high-pressure side will the concentration be 2.0 kg/m²? Assume a linear concentration profile.
A sheet of steel 1.8 mm thick has nitrogen atmospheres on both sides at 1200°C and is permitted to achieve a steady-state diffusion condition. The diffusion coefficient for nitrogen in steel at this temperature is 6 x 10-1" m²/s, and the diffusion flux is found to be 1.2 x 107 kg/m²-s. Also, it is known that the concentration of nitrogen in the steel at the high-pressure surface is 4 kg/m². How far into the sheet from this high-pressure side will the concentration be 2.0 kg/m²? Assume a linear concentration profile.
Chemistry
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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
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Transcribed Image Text:A sheet of steel 1.8 mm thick has nitrogen atmospheres on both sides at 1200°C and is permitted to
achieve a steady-state diffusion condition. The diffusion coefficient for nitrogen in steel at this
temperature is 6 x 10-1" m²/s, and the diffusion flux is found to be 1.2 x 107 kg/m²-s. Also, it is
known that the concentration of nitrogen in the steel at the high-pressure surface is 4 kg/m’. How
far into the sheet from this high-pressure side will the concentration be 2.0 kg/m³? Assume a
linear concentration profile.
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