Mathematics, 07.03.2020 20:16 krystalruby1219
A 14 gram sample of a substance thats used to sterilize surgical instruments has a k-value of 0.1481. find the substance half-life, in days round answer to the nearest tenth
Answers: 2
.
is 
.
, and the k-value is 
; therefore, 
it takes to decay to half its initial value; therefore, 
![ln[e^{-0.1481\tau } ]= ln[\dfrac{1}{2}]](/tpl/images/0538/1873/cbdeb.png)
![-0.1481\tau = ln[\dfrac{1}{2} ]](/tpl/images/0538/1873/c9a26.png)
![\tau = \dfrac{ln[\dfrac{1}{2} ]}{-0.1481}](/tpl/images/0538/1873/995ac.png)
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A 14 gram sample of a substance thats used to sterilize surgical instruments has a k-value of 0.1481...
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