Chemistry, 21.07.2019 17:30 Hrjohnson2004
An 80.0 g sample of iodine-131 was placed in a sealed vessel forty days ago. only 2.5 g of this isotope is now left. what is its half-life?
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An 80.0 g sample of iodine-131 was placed in a sealed vessel forty days ago. only 2.5 g of this isot...
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