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Lyrx [107]
4 years ago
5

Uranium 235 has a half life of 700 million years . how long does it take a 100 gram sample of uranium 235 to decay a mass of 50

grams
Biology
1 answer:
djyliett [7]4 years ago
5 0
The half-life is the time needed for 1/2 of a sample to decay.
50 g is 1/2 of 100 g, so the time needed is…one half-life.
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