120 lodine 131 decay 100 lodine 131 parent isotope % 80 60 40 20 0 0 10 20 20 30 Time (days) 40 40 50 50 60 50 d) Below is a decay curve for iodine-131. This is used in the treatment of thyroid cancer. Radioactive iodine should not remain in the body at high levels. A safe amount is 2 g of iodine-131 remaining in the body after 24 days. Considering the decay rate, use the graph below to work out the largest safe mass of iodine-131 that should be used for treatment?
120 lodine 131 decay 100 lodine 131 parent isotope % 80 60 40 20 0 0 10 20 20 30 Time (days) 40 40 50 50 60 50 d) Below is a decay curve for iodine-131. This is used in the treatment of thyroid cancer. Radioactive iodine should not remain in the body at high levels. A safe amount is 2 g of iodine-131 remaining in the body after 24 days. Considering the decay rate, use the graph below to work out the largest safe mass of iodine-131 that should be used for treatment?
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Transcribed Image Text:120
lodine 131 decay
100
lodine 131 parent isotope %
80
60
40
20
0
0
10
20
20
30
Time (days)
40
40
50
50
60
50
Transcribed Image Text:d) Below is a decay curve for iodine-131. This is used in
the treatment of thyroid cancer. Radioactive iodine
should not remain in the body at high levels. A safe
amount is 2 g of iodine-131 remaining in the body after
24 days.
Considering the decay rate, use the graph below to
work out the largest safe mass of iodine-131 that should
be used for treatment?
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