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26-02-2021
Mathematics

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Element X is a radioactive isotope such that every 61 years, its mass decreases by half.
Given that the initial mass of a sample of Element X is 20 grams, how long would it be until the mass of the sample reached 16 grams, to the nearest tenth of a year?

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05-03-2021

Answer:

19.6

Step-by-step explanation:

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