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Chemistry

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what is the half-life of a radioactive material if after 35 hours you have 6.25g left of 200mg sample?

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Today at 10:46 PM

Answer:

As an example, iodine-131 is a radioisotope with a half-life of 8 days. It decays by beta particle emission into xenon-131. After eight days have passed, half of the atoms of any sample of iodine-131 will have decayed, and the sample will now be 50% iodine-131 and 50% xenon-131.13

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