The isotope 90Sr emits radiation by a first-order process (as is always the case with radioactive decay) and has a half-life of 28.1 years. When ingested by mammals it becomes permanently incorporated in bone tissue. If 1µg is absorbed at birth, how much of this isotope remains after 25 years, 50 years, and 70 years?
The isotope 90Sr emits radiation by a first-order process (as is always the case with radioactive decay) and has a half-life of 28.1 years. When ingested by mammals it becomes permanently incorporated in bone tissue. If 1µg is absorbed at birth, how much of this isotope remains after 25 years, 50 years, and 70 years?
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Transcribed Image Text:The isotope 90Sr emits radiation by a first-order process (as is always the case with radioactive decay) and
has a half-life of 28.1 years. When ingested by mammals it becomes permanently incorporated in bone tissue. If 1µg
is absorbed at birth, how much of this isotope remains after 25 years, 50 years, and 70 years?
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