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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