Monday, November 14, 2011

For 1.3 mole of the radioactive isotope strontium-87, half-life = 2.8 hours, how many disintegrations have occ

For 1.3 mole of the radioactive isotope strontium-87, half-life = 2.8 hours, how many disintegrations have occured after 19 minutes?
Posted by Cody Keezer at 2:34 AM

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