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The half life of iodine-131 is 5 days. Suppose you receive a 13mCi dosefor cancer treatment. How much would be left after 40 days?
A)1.75mci
B)0.007mci
C)0.05mci
D)2mci

 Feb 15, 2021

Best Answer 

 #1
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40 days / 5 days/ half life = 8 half lives

 

13 mCi * (1/2 )8   = .05 mCi

 Feb 15, 2021
 #1
avatar+29193 
+2
Best Answer

40 days / 5 days/ half life = 8 half lives

 

13 mCi * (1/2 )8   = .05 mCi

ElectricPavlov Feb 15, 2021

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