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6. How long will it take for the amount of radon-222 to be reduced to 25 grams?

User Ziomara
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Answer:

To answer this question, we need to know the half-life of radon-222. Let's assume it has a half-life of 3.8 days.

If the initial amount of radon-222 is 100 grams, then after one half-life (3.8 days), it will have decayed to 50 grams. After two half-lives (7.6 days), it will have decayed to 25 grams.

Therefore, it will take 7.6 days for the amount of radon-222 to be reduced to 25 grams.

User CalvinR
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