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Question 2. If a rhyolite rock (sample A) contains 250 out of 1000 atoms of radioactive parent atoms of Element], how old is the rock?

Question 2. If a rhyolite rock (sample A) contains 250 out of 1000 atoms of radioactive parent atoms of Element], how old is the rock? A. 60 million years old B. \"120 million years old C. 180 million years old D. 240 million years old

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