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Mathematics, 01.07.2019 05:30 jby
Asuperhero is rendered powerless when exposed to 3535 or more grams of a certain element. a 550550 year old rock that originally contained 250250 grams of this element was recently stolen from a rock museum by the​ superhero's nemesis. the​ half-life of the element is known to be 200200 years. ​a) how many grams of the element are still contained in the stolen​ rock? ​b) for how many years can this rock be used by the​ superhero's nemesis to render the superhero​ powerless?
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Asuperhero is rendered powerless when exposed to 3535 or more grams of a certain element. a 550550 y...
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