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A radioactive isotope has a half-life of 9 hours. find the amount of the isotope left from a 360-milligram sample after 36 hours. if necessary, round your answer to the nearest thousandth.
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A radioactive isotope has a half-life of 9 hours. find the amount of the isotope left from a 360-milligram sample after 36 hours. if necessary, round your answer to the nearest thousandth.

User Frank Wisniewski
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1 Answer

9 votes

Answer:

22.5 mg

Step-by-step explanation:

36 hrs / 9 hr/half life = 4 half lives

(1/2)^4 * 360 = 22.5 mg

User Tushar Asodariya
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