Technetium-99 is an ideal radioisotope for scanning organs because it has a half-life of 6.0 h and is a pure gamma emitter. suppose that 80.0 milligrams were of tc-99 were prepared at 6:00 am, how many milligrams of tc-99 would remain at 6:00 pm the same day? make sure to include units in your answer.
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