Question: Strontium 9 0 3 8 Sr has a half - life of 2 8 . 5 yr . It is chemically similar to calcium, enters

Strontium 9038Sr has a half-life of 28.5 yr. It is chemically similar to calcium, enters the body through the food chain, and collects in bones. Consequently, 9038Sr is a particularly serious health hazard. How long (in years) will it take for 99.99% of the 9038Sr released in a nuclear reactor accident to disappear?

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