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satela [25.4K]
3 years ago
10

After two half-lives, how much of the original material has decayed?

Geography
2 answers:
Leona [35]3 years ago
7 0
After two half-lives theres only going to be 25% of the original isotope, 75% of the decay product.
rewona [7]3 years ago
5 0

Answer:

75%

Explanation:

100 divided by 2 is 50, and 50 divided by 2 is 25. That's how much material you have left, so 75% of it has decayed.

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