Mathematics, 04.03.2022 01:00 lexiecooley

PLEASE HELP Element X decays radioactively with a half life of 9 minutes. If there are 890 grams of Element X, how long, to the nearest tenth of a minute, would it take the element to decay to 238 grams?

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PLEASE HELP Element X decays radioactively with a half life of 9 minutes. If there are 890 grams of...