Mathematics, 12.10.2019 18:30, lolo15xxx

Radioactive uranium-235 has a half-life of about 700 million years. suppose you find a rock and chemical analysis tells you that only one sixteenth
of the rock's original uranium-235 remains. how old is the rock?

a.
2.8 billion years old

b.
1.4 billion years old

c.
175 million years old

d.
2.1 billion years old

e.
3.5 billion years old

f.
350 million years old

Answers: 3

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Radioactive uranium-235 has a half-life of about 700 million years. suppose you find a rock and chem...