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Mathematics, 14.12.2020 21:10 musicaljay8320
Colbalt-60 has half-life of about 5 years, How many grams of a 300 g sample will remain after 20 years?
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Colbalt-60 has half-life of about 5 years, How many grams of a 300 g sample will remain after 20 yea...
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