How many half-lives must elapse until 78.0% of a radioactive sample of atoms has decayed? (Note that there is no unit for this answer.)
Question
Solution 1
The half-life of a radioactive substance is the time it takes for half of the atoms in a sample to decay.
To find out how many half-lives have elapsed, we need to determine how much of the original sample remains.
In this case, we're told that 78.0% of the sample has decayed. This means that 22. Knowee AI StudyGPT is a powerful AI-powered study tool designed to help you to solve study prob
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