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2. A 96 gram sample of a radioactive substance is left undisturbed for 21.0 hours. After this time, only 3.0 grams remain. What is the half-life of the substance
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Which element would mostly likely have an electron affinity measuring closest to zero
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2. A 96 gram sample of a radioactive substance is left undisturbed for 21.0 hours.
After this time...
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