Initially 100 milligrams of a radioactive substance was present. After 8 hours the mass had decreased by 6%. If the rate of decay is proportional to the amount of the substance present at time t, determine the half-life of the radioactive substance. (Round vour answer to one decimal place.

Initially 100 milligrams of a radioactive substance was present. After 8 hours the mass had decreased by 6%. If the rate of decay is proportional to the amount of the substance present at time t, determine the half-life of the radioactive substance. (Round vour answer to one decimal place.

College Algebra

10th Edition

ISBN:9781337282291

Author:Ron Larson

Publisher:Ron Larson

Chapter5: Exponential And Logarithmic Functions

Section: Chapter Questions

Problem 28T: The half-life of radioactive actinium ( 227AC ) is 21.77 years. What percent of a present amount of...

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