The half-life of potassium-40' is about --1-3- billion-years. It decays to-form- A moon rock is found...

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The half-life of potassium-40' is about --1-3- billion-years. It decays to-form- A moon rock is found to contain 90 gm of potassium and 630.gm of calcium. How old is the rock calcium-40. - Carbon-14 has a half-life of about. 6,000 years. It decays to form nitrogen-14. A sample of bone is found to contain 30 gm of carbon and 90 gm of nitrogen. How old is the bore? The half-life of potassium-40' is about --1-3- billion-years. It decays to-form- A moon rock is found to contain 90 gm of potassium and 630.gm of calcium. How old is the rock calcium-40. - Carbon-14 has a half-life of about. 6,000 years. It decays to form nitrogen-14. A sample of bone is found to contain 30 gm of carbon and 90 gm of nitrogen. How old is the bore?

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1 The decay of potassium40 to calcium40 follows the equation K40 Ca40 e The halflife of potassium40 is about 1 to 3 billion years which means that hal... View the full answer