Mathematics, 26.06.2019 11:30, Alangs
Iodine-131 is used medically to study the activity of the thyroid gland. iodine – 131 has a half-life of about 8 days. this means that approximately every 8 days, half the mass of the iodine decays into another element. if a container held a mass of 64 milligrams of iodine – 131, how much is left after 40 days?
Answers: 1
= 8 days
= 64 milligrams = 0.064 g
= ?
![\log[N]=\log[N_o]-\frac{\lambda \times t}{2.303}](/tpl/images/0019/2984/12eb8.png)
![\log[N]=\log[0.064 g]-\frac{0.0866 day^{-1}\times 40 days}{2.303}](/tpl/images/0019/2984/9a47d.png)
![N=Antilog [-2.6979 g]](/tpl/images/0019/2984/54347.png)
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Iodine-131 is used medically to study the activity of the thyroid gland. iodine – 131 has a half-lif...
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