A) 37.5 days
B) 30 days
C) 25 days
D) 50 days
Correct Answer: B
Solution :
\[t\] = Feb 1 to July 1 =\[28+31+30+31+30=150\text{ days}\] \[\lambda =\frac{2.303}{150}\log \frac{8}{0.25}=\frac{2.303}{150}\log {{2}^{5}}\]\[=\frac{0.693}{30}\text{da}{{\text{y}}^{-1}}\] \[{{t}_{1/2}}=\frac{0.693}{0.693/30}=30\,\text{days}\].You need to login to perform this action.
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