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Mathematics, 23.11.2020 03:00, smartowl101
URGENT PLS HELP!! If 14 g of radioactive substance are present initially and 8 yr later only 7 g remain , how much of the substance will be present after 19 yr?
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Answers: 2
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URGENT PLS HELP!!
If 14 g of radioactive substance are present initially and 8 yr later only 7 g re...
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