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Chemistry, 20.09.2019 09:30 nalicia

If you have 200 g of radioactive element z at 12: 00noon and have only 12.5g left at 8: 00pm that same day, what is the
half-life of this element?

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If you have 200 g of radioactive element z at 12: 00noon and have only 12.5g left at 8: 00pm that sa...
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