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CHEM 110 4/15/24 duration 47 minutes 8 seconds CHEM 110 4/15/24 CHEM 110 4/15/24	CHEM 110 4/15/24 Artificial nuclear reactions and discovery of new elements mass energy side charges neutrons uranium times experiments reaction elements charge particles decay 60s accounting alpha carbon reactions element atoms From Katharine Tibbetts 0 plays 0