Question: followand answer all steps and show work 5. {3} A radioactive substance decays from ( 32 mathrm{mg} ) to ( 8 mathrm{mg} ) in 32.3

followand answer all steps and show work 5. \{3\} A radioactive substance decays from $ 32 \mathrm{mg} $ to $ 8 \mathrm{mg} $ in 32.3 minutes. Calculate the time required for $ 90 \% $ of the substance to be decayed. Show your work for 2 answers

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