21. Nuclear Chemistry
Radioactive Half-Life
1:09 minutes
Problem 60
Textbook Question
Textbook QuestionRadioactive decay exhibits a first-order rate law, rate = -∆N/∆t = kN, where N denotes the number of radio-active nuclei present at time t. The half-life of strontium-90, a dangerous nuclear fission product, is 29 years. (a) What fraction of the strontium-90 remains after three half-lives?
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