Question: Strontium 3 8 Sr 9 0 has a half - life of 2 9 . 1 yr . It is chemically similar to calcium, enters

Strontium 38Sr90 has a half-life of 29.1 yr. It is chemically similar to calcium, enters the body through the food chain, and collects in the bones. Consequently, 38Sr90 is a particularly serious health hazard. How long (in years) will it take for 99.9328% of the 38Sr90 released in a nuclear reactor accident to disappear?

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