February 19, 2017

Homework Help: chemistry

Posted by Shay on Wednesday, September 26, 2012 at 10:04am.

Technetium-99m is an ideal radioisotope for scanning organs because it has a half-life of 6.0 {\rm hr} and is a pure gamma emitter. Suppose that 280{\rm mg} were prepared in the technetium generator this morning. How many milligrams would remain after the following intervals?

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