Mathematics, 25.12.2019 04:31, mcouil9369

Radium-226 is a radioactive substance with an annual decay rate of 0.04 % . a series of coal mines in poland contain an abundance of the aforementioned isotope of radium. if these coal mines contained 400 thousand kilograms of radium-226 in 1937, then how much radium-226 would be left in those coal mines in 2017? round your answer to the nearest kilogram.

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Radium-226 is a radioactive substance with an annual decay rate of 0.04 % . a series of coal mines i...