After 15 days, 25 grams of the radioisotope will remain left.
According to the question,
Half life of the radioisotope,
Throughout the 15 days the radioisotope is halved 3 times,
- [tex]\frac{15 \ days}{5 \ days}[/tex]
Now,
→ The amount of isotope that will:
= [tex]200\times \frac{1}{2}\times \frac{1}{2}\times \frac{1}{2}[/tex]
= [tex]200\times \frac{1}{8}[/tex]
= [tex]25 \ g[/tex]
Thus the above response is correct.
Learn more about radioisotope here:
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