SOLUTION: A radioactive material has a half life of 3 hours. If after 8 hours there are 205g left, how many grams of material were there to begin with?

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Question 1146959: A radioactive material has a half life of 3 hours. If after 8 hours there are 205g left, how many grams of material were there to begin with?
Answer by greenestamps(13203) About Me  (Show Source):
You can put this solution on YOUR website!
duplicate -- answered