An unknown radioactive element decays into non-radioactive substances. In 660 days the radioactivity of a sample decreases by 51%. What is the half-life?
An unknown radioactive element decays into non-radioactive substances. In 660 days the radioactivity of a sample decreases by 51%. What is the half-life?
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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An unknown radioactive element decays into non-radioactive substances. In 660 days the radioactivity of a sample decreases by 51%.
What is the half-life?
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