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How many grams of radioactive Cs-137 remain after 4 half-life periods 120.9years

How many grams of radioactive Cs-137 remain after 4 half-life periods 120.9years
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How many grams of radioactive Cs-137 remain after 4 half-life periods 120.9years

User Ihammys
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Answer:

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Step-by-step explanation:

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User Jrbjazz
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