Half Life
What is the average life of the substance, if the initial sample had a mass of 64g?
4.0 g of a radioactive substance is left after 72 years of decline. What is the average life of the substance, if the initial sample had a mass of 64g? Thanks!
It was four half-lives ranging from say 64-32, then 32-16, then 16-8 and 8-4. So answer is 72 divided by 4 days or 18 days.
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ne tür olacak ama ?