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A sample originally contained 1.28 g of a radioisotope. It now contains 1.12 g of its daughter isotope. How many half-lives have passed since the sample originally formed?
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A sample originally contained 1.28 g of a radioisotope. It now contains 1.12 g of its daughter isotope.

How many half-lives have passed since the sample originally formed?

User Omnifarious
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3

Step-by-step explanation:

User Chinthaka
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