Mathematics, 29.11.2021 03:40, naomiedgrey

An unknown radioactive element decays into non-radioactive substances. In 900 days the radioactivity o sample decreases by 49 percent . (a) What is the half-life of the element? half - : ( days) Round to two decimal places . How long will it take for a sample of 100 mg to decay to 51 mg

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An unknown radioactive element decays into non-radioactive substances. In 900 days the radioactivity...