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Answer on Inorganic Chemistry Question for Megan

Question #15414
How many grams of a 214 g sample of bismuth-214 will remain after 60 min?
Expert's answer
Half life of bismuth-214 is 20 min.

60 min / 20 min = 3 half life
periods
(1/2)^3 = 0.125
214 g x 0.125 = 26.75 g remains after 60 min

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