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Chemistry, 04.12.2019 07:31 bebo14

Niobium-91 has a half-life of 680 years. after 2,040 years, how much niobium-91 will remain from a 300.0-g sample?
3 g
18.75 g
37.5 g
100.0 g

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Niobium-91 has a half-life of 680 years. after 2,040 years, how much niobium-91 will remain from a 3...

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