A certain radioisotope has a half-life of 8.0 hours; how much of a 192 g sample of this radioisotope would decay after a full da
y?
2 answers:
If the half-life is 8.0 hours and there are 24 hours in a day, the radioisotope reaches its half-life 3 times.
Therefore, after a full day, there are 24 g of the sample left, and 168 g has decayed.
Answer:
167.9895 grams sample of this radioisotope would decay after a full day.
Explanation:
= initial amount of radioisotope
N = Amount of radioisotope left after time t.
= Decay Constant
= Half life of the radioisotope
We have:
t = 1 day = 24 hour
N = 24.0105 g
24.0105 grams of radioisotope will remain after 1 whole day.
Amount of radioisotope decayed =
167.9895 grams sample of this radioisotope would decay after a full day.
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