How much of the sample remains after three half-lives

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Reference no: EM13704883

Problem 1- A sample initially contains 3.2 moles of a radioactive isotope. How much of the sample remains after three half-lives?

2- Plutonium-236 is an alpha emitter with a half-life of 2.86 years. How long will it take for the 1.35mg sample of Pu?236 to decay to 0.160mg?

Express your answers to two significant figures separated by comma.

Reference no: EM13704883

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