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The diffusion of a buried antimony layer is only 20% of its normal diffusion in an inert ambient after a phosphorus implant is performed at the surface of a silicon wafer.
The phosphorus diffusion coefficient is itself enhanced by a factor of 4(400%).
a. Suggest a qualitative reason for this observation.
b. Assuming that the phosphorus diffuses completely by an interstitial mechanism, calculate how much of the antimony diffusion is mediated by interstitials and how much by vacancies.
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A disinfectant states that it will kill 99.9% of bacteria if left on for 45 minutes. What percentage of bacteria are killed if the disinfectant is left on only for 5 minutes
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A plumber's handbook states that you should not connect a copper pipe directly to a steel pipe because electrochemical reactions between the two metals will cause corrosion. What spontaneous redox reaction(s) might cause the corrosion
Suppose that an enzyme has the capacity to convert substrate A (Km = 1 x 10-3 M) to a product P1. Suppose the same enzyme can also convert another substrate B (Km = 1 x 10-6 M) to a different product, P2.
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solving this question helps the student to understand how to find the limiting reactant alternate method and how to
What is the wavelength of light whose energy is 1000.4 J?
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