Radioactive iodine (Iodine-131) has a half-life of 8.04 days. How long will it take for 150g of Iodine-131 to decay until only 25g remains?

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Radioactive iodine (Iodine-131) has a half-life of 8.04 days. How long will it take for 150g of Iodine-131 to decay until only 25g remains?

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Step 1

Given:

The half-life of Iodine-131, t12 = 8.04 days.

The initial amount of Iodine-131, (N0) = 150 g.

The remaining amount of Iodine-131, (N) = 25 g.

 

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