After an organism dies, it stops taking in radioactive carbon-14 from the environment. If the carbon -14: carbon-12 ratio (146 C/ 126 C) in a piece of petrified wood is one-sixteenth of the ratio in living mater, how old is the rock? (hint: how many half lives have elapsed?)

After an organism dies, it stops taking in radioactive carbon-14 from the environment. If the carbon -14: carbon-12 ratio (146 C/ 126 C) in a piece of petrified wood is one-sixteenth of the ratio in living mater, how old is the rock? (hint: how many half lives have elapsed?)

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Question

After an organism dies, it stops taking in radioactive carbon-14 from the environment. If the carbon -14: carbon-12 ratio (¹⁴₆ C/ ¹²₆C) in a piece of petrified wood is one-sixteenth of the ratio in living mater, how old is the rock? (hint: how many half lives have elapsed?)

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