3. An isotope of sodium, Na - 24, has a half-life of 15 hours. A sample contains 42.8 grams of Na-24. Find the remaining sodium after 5 days.

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3. An isotope of sodium, Na - 24, has a half-life of 15 hours. A sample contains 42.8
grams of Na-24. Find the remaining sodium after 5 days.
Transcribed Image Text:3. An isotope of sodium, Na - 24, has a half-life of 15 hours. A sample contains 42.8 grams of Na-24. Find the remaining sodium after 5 days.
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