Question: 5. {3} A radioactive substance decays from 32 mg to 8 mg in 32.3 minutes. Calculate the time required for 90% of the substance

5. {3} A radioactive substance decays from 32 mg to 8 mg

5. {3} A radioactive substance decays from 32 mg to 8 mg in 32.3 minutes. Calculate the time required for 90% of the substance to be decayed. Show your work for full marks.

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