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Problem 9:   Answer the following questions based on the graph of a radioactive iodine isotope shown to the right. Part (a)  What is the half-life of the material in days?  t = _________  days Part (b)  In how many days does the substance decay to one-fourth its original value?  t = _________  days

Problem 9:   Answer the following questions based on the graph of a radioactive iodine isotope shown to the right. Part (a)  What is the half-life of the material in days?  t = _________  days Part (b)  In how many days does the substance decay to one-fourth its original value?  t = _________  days

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Problem 9:   Answer the following questions based on the graph of a radioactive iodine isotope shown to the right.

Part (a)  What is the half-life of the material in days? 

t = _________  days

Part (b)  In how many days does the substance decay to one-fourth its original value? 

t = _________  days

Radioactive decay of lodine isotope 100 87.5 75 62.5 50 37.5 25 12.5 8 16 24 32 40 48 56 64 72 80 88 Time of decay (days) % of remaining lodine
Transcribed Image Text:Radioactive decay of lodine isotope 100 87.5 75 62.5 50 37.5 25 12.5 8 16 24 32 40 48 56 64 72 80 88 Time of decay (days) % of remaining lodine
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