So half of it will be gone in 6 hours.
Another half of it will be gone in 12 hours. You started with 2g.
At the end of 6 hrs there will be 1 g.
At the end of 12 hours there will be 1/2 g left? right?
I need to know how much of a 2g sample of Technetium-99 would be left after 12 hours.
The half life of Technetium-99 is 6 hours
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