Chemistry, 23.09.2019 22:30 brennarfa

Helium 8 has a half life of 4.5 years. how many rounds have gone by in 27 years?
carounds

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Helium 8 has a half life of 4.5 years. how many rounds have gone by in 27 years?
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Helium 8 has a half life of 4.5 years. how many rounds have gone by in 27 years? carounds

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Helium 8 has a half life of 4.5 years. how many rounds have gone by in 27 years?
carounds