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Seven hours were required to produce an alloy with copper concentration of 0.25 wt% in depth of 0.5 mm in alluminum at 500 C. The diffusivities of this system are 4.8 x 10- m/s and 9 x 10 m/s at 500°C and 530°C respectively. The time required to produce the same alloy at 530°C is: O 3.18 h O 3.73 h O 1.75 h O 0.63 h

Seven hours were required to produce an alloy with copper concentration of 0.25 wt% in depth of 0.5 mm in alluminum at 500 C. The diffusivities of this system are 4.8 x 10- m/s and 9 x 10 m/s at 500°C and 530°C respectively. The time required to produce the same alloy at 530°C is: O 3.18 h O 3.73 h O 1.75 h O 0.63 h

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
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Seven hours were required to produce an alloy with copper concentration of 0.25 wt% in depth of 0.5 mm in aluminum at 500 C. The diffusivities of this system are 4.8 x 10-4 m²/s and 9 x 101 m/s at 500 C and 530 C respectively. The time required to produce the same alloy at 530°C is: 3.18 h 3.73 h 1.75 h 0.63 h
Transcribed Image Text:Seven hours were required to produce an alloy with copper concentration of 0.25 wt% in depth of 0.5 mm in aluminum at 500 C. The diffusivities of this system are 4.8 x 10-4 m²/s and 9 x 101 m/s at 500 C and 530 C respectively. The time required to produce the same alloy at 530°C is: 3.18 h 3.73 h 1.75 h 0.63 h
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