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Radon-22 has a half –life of approximately 6 days. If you begin with a sample containing 40 grams of radon, how many grams of radon will be left after 24 days?

Radon-22 has a half –life of approximately 6 days. If you begin with a sample containing 40 grams of radon, how many grams of radon will be left after 24 days?
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Radon-22 has a half –life of approximately 6 days. If you begin with a sample containing 40 grams of radon, how many grams of radon will be left after 24 days?

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User Mouneer
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2.5 grams: 40/2 = 20 (Day 6), 20/2 = 10 (Day 12), 10/2 = 5 (Day 18), 5/2 = 2.5 (Day 24)
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User Prakhar Agarwal
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