15. Chemical Kinetics
Half-Life
Problem 57b
Textbook Question
Textbook QuestionThe half-life for the radioactive decay of U-238 is 4.5 billion years and is independent of initial concentration. If a sample of U-238 initially contained 1.5 * 1018 atoms when the universe was formed 13.8 billion years ago, how many U-238 atoms does it contain today?
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