A sample of a radioactive isotope is found to have an activity of 115.0 Bq immediately after

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A sample of a radioactive isotope is found to have an activity of 115.0 Bq immediately after it is pulled from the reactor that formed it. Its activity 2 h 15 min later is measured to be 85.2 Bq.

(a) Calculate the decay constant and the half-life of the sample.

(b) How many radioactive nuclei were there in the sample initially?

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Fundamentals of Ethics for Scientists and Engineers

ISBN: 978-0195134889

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Authors: Edmund G. Seebauer, Robert L. Barry

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Question Posted: Nov 29, 2011 12:55 PM

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A sample of a radioactive isotope is found to have an activity of 115.0 Bq immediately after

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a Using Equation 407 ln R 0 R ...View the full answer

Fundamentals of Ethics for Scientists and Engineers

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