Living matter has a carbon-14 activity of about 16 counts/min per gram of carbon. What is the age of an artifact for of which the carbon-14 activity is 8 counts/min per gram carbon?

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Living matter has a carbon-14 activity of about 16 counts/min per gram of carbon. What is the age of an artifact for of which the carbon-14 activity is 8 counts/min per gram carbon?

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Answer 1 · 2017-02-15T12:03:28

#"16 counts per minute x" (1/2) = "8 counts per minute x" (1/2) = 4 "counts per minute."#
#"It takes two half-lives to have a decay rate of 4 counts per minute."#
#"The half-live of carbon-14 is 5730 years. "#
#"5730 years x 2 = 11,460 years old. "#

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Living matter has a carbon-14 activity of about 16 counts/min per gram of carbon. What is the age of an artifact for of which the carbon-14 activity is 8 counts/min per gram carbon?

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