The half-life of a specific element was calculated to be 5,200 years. What percentage of a sample of the pure element will remain after two half-lives? 5% 10% 25% 75%

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The half-life of a specific element was calculated to be 5,200 years. What percentage of a sample of the pure element will remain after two half-lives? 5% 10% 25% 75%

Chemistry
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After every half-life, decreases the amount by 50%. If you start with 100%, how much is gone after 1 half life?
50
and then half that to get the percentage after the 2nd half life

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Other answers:

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No 25
half of 50%
right 25%
Would that be my answer?
yes

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