After 50 minutes the counter registered 281 countssecond
A Geiger counter registered 1000 counts/second from a sample that contained a radioactive isotope of polonium. After 5.0 minutes, the counter registered 281 counts/second. What is the half-life of this isotope in seconds?
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a geiger counter registered 1000 countssecond from a sample that contained a radioactive isotope of polonium after 50
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