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Chemistry, 01.08.2019 19:40 robert7248
Aspecific radioactive isotope is presented for our scientific evaluation for possible use of this isotope within the field of radioisotopic medical tracers. at 1 pm, there are 5.6 grams and at 7 pm, there are 3.2 grams. what's the half-life? a) about 3.2 hrs b) about 7.4 hrs c) about 17.1 hrs d) over 24 hrs
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