Radioactive decay can be described by the following equation In A = In Ao – kt where A, is the original amount of the substance, A is the amount of the substance remaining after time t, and k is a constant that is characteristic of the substance. For the radioactive isotope phosphorus-32, k is 4.85 × 10-² days. If the original amount of phosphorus-32 in a sample is 37.9 mg, how much time is needed for the amount of phosphorus-32 that remains to fall to 24.9 mg? days

Radioactive decay can be described by the following equation In A = In Ao – kt where A, is the original amount of the substance, A is the amount of the substance remaining after time t, and k is a constant that is characteristic of the substance. For the radioactive isotope phosphorus-32, k is 4.85 × 10-² days. If the original amount of phosphorus-32 in a sample is 37.9 mg, how much time is needed for the amount of phosphorus-32 that remains to fall to 24.9 mg? days

College Algebra

7th Edition

ISBN:9781305115545

Author:James Stewart, Lothar Redlin, Saleem Watson

Publisher:James Stewart, Lothar Redlin, Saleem Watson

Chapter4: Exponential And Logarithmic Functions

Section: Chapter Questions

Problem 12CC: Suppose that the initial size of a population is n0 and the population grows exponentially. Let n(t)...

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