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Radioactive uranium 235 has a half life of about 700 million years Suppose you find a rock 1 16 and chemical analysis tells you that

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Radioactive uranium 235 has a half life of about 700 million years Suppose you find a rock 1 16 and chemical analysis tells you that only of the rock s original uranium 235 remains How old is the rock Select the correct answer below OA 350 million years old OB 1 4 billion years old OC 3 5 billion years old OD 175 million years old OE 2 1 billion years old OF 2 8 billion years old

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