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An igneous rock contains one half of its original amount of K(potassium)-40. how old is the rock
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An igneous rock contains one half of its original amount of K(potassium)-40. how old is the rock

User Algot
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6 votes
Answer: the rock will
be 1.251 billion years old.

Hope this helps! ^^
User Mr Griever
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Answer: 1.251 billion years

Explanation: The half-life of potassium 40 is 1.251*10^9 years. Since in the igneous rock there is one half of potassium left it means only one half-life has passed.

User Volodymyr Nazarenko
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