3 years ago

Someone help me fill this up please ill give 22 points!

Mathematics

1 answer:

Charra [1.4K]3 years ago

4 0

I got this question on a review and got it correct.Its these nuts bro that answer

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The half-life of a radioactive isotope is the time it takes for a quantity of the Isotope to be reduced to half Its Initial mass

mariarad [96]

$\stackrel{\textit{half of 165}}{165\cdot \cfrac{1}{2}}~\hfill \stackrel{\textit{half of half of 165}}{165\cdot \cfrac{1}{2}\cdot \cfrac{1}{2}}~\hfill \stackrel{\textit{half of half of half of 165}}{165\cdot \cfrac{1}{2}\cdot \cfrac{1}{2}\cdot \cfrac{1}{2}} \\\\\\ 165\cdot \cfrac{1}{8}\implies \cfrac{165}{8}\implies 20.625~grams$