SAT, 16.12.2021 19:50 Yungnaudie

An original sample of the radioisotope fluorine-21 had a mass of 80. 0 milligrams. Only 20. 0 milligrams of this original sample remain unchanged after 8. 32 seconds. What is the half-life of fluorine-21?.

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An original sample of the radioisotope fluorine-21 had a mass of 80. 0 milligrams. Only 20. 0 millig...

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