Living Matter Has 1

question 49

Multiple Choice

Living matter has 1.3 × 10^-10 % of its carbon in the form of ¹⁴C which has a half-life of 5730 y. A mammoth bone has a 300-g sample of carbon separated from it, and the sample is found to have an activity of 20 decays per second. How old is the bone?

• A) 15,000 y
• B) 10,900 y
• C) 11,500 y
• D) 7600 y
• E) 6400 y

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