Mathematics, 28.01.2020 17:52 beccadrums
An unknown radioactive element decays into non-radioactive substances. in 180 days the radioactivity of a sample decreases by 73 percent.
(a) what is the half-life of the element? (in days)
(b) how long will it take for a sample of 100 mg to decay to 60 mg? (in days)
Answers: 2
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An unknown radioactive element decays into non-radioactive substances. in 180 days the radioactivity...
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