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fomenos
3 years ago
11

⚠️help pls ⚠️

Chemistry
1 answer:
egoroff_w [7]3 years ago
4 0

Answer:

A half life of element is 8.07 days

B iodine 131

C check equation in attached image

Explanation:

80/2 =40

40/2=20

20/2=10

10/2=5

5/2=2.5

After 5 half lives it becomes 2.5 kg

n is the number of half-lives that pass in a given period of time

n= period of time/ half-life

Half life =period of time / n

Half life = 40.35/5= 8.07 days

odine-131 → xenon-131 + beta particle

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