Biology
Biology, 11.05.2021 20:40, Jaylanbeadles

Hium-235 has a half-life of 700 million years. How long does it take a 100- gram sample of Uranium-235 to decay to a mass of 50 grams?
A. 1,400 million years
B. 235 million years
C. 350 million years
D. 700 million years

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