An Archaeologist Finds the ¹⁴C in a Sample of 3

question 36

Multiple Choice

An archaeologist finds the ¹⁴C in a sample of 3.10 g of material to be decaying at 107 counts per second. A modern 1.00-g sample of the same material decays at 151 counts per second. The half-life of ¹⁴C is 5730 y. How old is the sample?

• A) 12,200 y
• B) 8460 y
• C) 25,100 y
• D) 12,600 y

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