A) \[4.69\,\,g\]
B) \[46.8\,\,g\]
C) \[9.375\,\,g\]
D) \[93.75\,\,g\]
Correct Answer: A
Solution :
Number of half-lives \[n=\frac{t}{{{t}_{1/2}}}=\frac{18h}{3h}=6\] Using the relation \[N={{N}_{0}}{{\left( \frac{1}{2} \right)}^{n}}\] \[N=300\times {{\left( \frac{1}{2} \right)}^{6}}\] Hence, \[N=300\times \frac{1}{64}=4.69g\]
You need to login to perform this action.
You will be redirected in
3 sec
