1. The half-life of a certain radioactive substance is 30 years. Assume we have 10 grams of the substance initially. a) How much will remain after 80 years? b) After how long will only 2 grams remain?
1. The half-life of a certain radioactive substance is 30 years. Assume we have 10 grams of the substance initially. a) How much will remain after 80 years? b) After how long will only 2 grams remain?
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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Transcribed Image Text:1. The half-life of a certain radioactive substance is 30 years. Assume we have 10 grams
of the substance initially.
a) How much will remain after 80 years?
b) After how long will only 2 grams remain?
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