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Iodine-131 has a half-life of 8 days. How much of a 1000 mg sample would be left after 24 days?

Question 4 options:

250 mg


500 mg


125 mg


62.5 mg

Respuesta :

twisha2812

Answer:

125 mg

Explanation:

Split into the day to have a better understanding

Day 0: 1000 (Nothing has happened yet)

Day 8: 500 (The sample has halved since it's reached it's half life once)

Day 16: 250 (Another 8 days passed so halved again)

Day 24: 125 (Another 8 days passed so halved again)

So the amount left is 125 mg

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