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8 June, 01:44

An element with mass 310 grams decay by 5.7% per minute. How much of the element is remaining after 9 minutes, to the nearest 10th of a gram

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  1. 8 June, 02:13
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    After 9 minutes, 51.3% has decayed. So then you would take 310x0.513. That would mean approximately 150.0 grams would be remaining
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