Chemistry, 08.10.2019 23:10 florochoa217
Radioactive decay can be described by the following equation where is the original amount of the substance, is the amount of the substance remaining after time , and is a constant that is characteristic of the substance. for the radioactive isotope iron-55, is if the original amount of iron-55 in a sample is 32.2 mg, how much iron-55 remains after 2.41 years have passed? mg
Answers: 3
![[A_0]](/tpl/images/0301/7111/9a686.png)
= 32.2 mg![[A_t]=[A_0]e^{-kt}](/tpl/images/0301/7111/1ef89.png)
![[A_t]](/tpl/images/0301/7111/5262c.png)
is the concentration at time t
![[A_t]=32.2\times e^{-0.2533\times 2.41}\ mg](/tpl/images/0301/7111/46016.png)
![[A_t]=32.2\times e^{-0.610453}\ mg](/tpl/images/0301/7111/d5182.png)
![[A_t]=17.49\ mg](/tpl/images/0301/7111/8a7a9.png)
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Radioactive decay can be described by the following equation where is the original amount of the sub...
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