babyoverdose babyoverdose

11-01-2022
Mathematics

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The half-life of chromium-51 is 28 days. If the sample contained 5.10 grams, how much chromium was present 168 days ago?

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bvlad2506 bvlad2506

11-01-2022

I don’t understand how many grams had the first one,so I can’t help you

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