A Sample of Wood from an Egyptian Mummy Case Gives

question 41

Multiple Choice

A sample of wood from an Egyptian mummy case gives a ¹⁴C count of 9.4 cpm/gC (counts per minute per gram of carbon) . How old is the wood? (The initial decay rate of ¹⁴C is 15.3 cpm/gC, and its half-life is 5730 years.)

• A) 3.5 × 10³ years
• B) 4.0 × 10³ years
• C) 5.1 × 10³ years
• D) 1.7 × 10³ years
• E) 2.8 × 10³ years

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