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Mathematics, 04.03.2022 05:50 brillamontijo

Element X decays radioactively with a half life of 15 minutes. If there are 400 grams of Element X, how long, to the nearest tenth of a minute, would it take the element to decay to 87 grams?

Element X decays radioactively with a half life of 15 minutes. If there are 400 grams of Element X,

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