Answer:
THE FRACTION OF IODINE-125 REMAINING AFTER 360 DAYS IS 1/64.
Step-by-step explanation:
half life of iodine- 125 = 60 days
Time elapsed for a decay = 360 days
using the formula:
Nt = No (1/2)^t/t1/2
The fraction left after a decay will be represented as:
Nt / No = (1/2) ^t/t1/2
Nt / No = (1/2) ^ 360 /60
Nt / No = (1/2) ^6
Nt / No = 1 / 64
The fraction of iodine-125 (Nt / No) remaining after 360 days is 1/ 64.