Multiple Choice
If a material has a half-life of 24 hours,how long do you have to wait until the amount of radioisotope is 1/4 its original amount?
A) 12 hours
B) 24 hours
C) 48 hours
D) 72 hours
E) practically forever,but it may be safe by then
Correct Answer:
Verified
Correct Answer:
Verified
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