Mathematics, 03.02.2021 21:00 tesiabrown10

Element X decay radioactively with a half life of 14 minutes. if there are 490 g of element X how long to the nearest 10th of a minute will it take the elements of a case of 123 g

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Element X decay radioactively with a half life of 14 minutes. if there are 490 g of element X how lo...