An Archaeologist Finds the ¹⁴C in a Sample Of $2.10 \mathrm {~g}$

question 78

Multiple Choice

An archaeologist finds the ¹⁴C in a sample of $2.10 \mathrm {~g}$ of material to be decaying at 107 Bq. A modern $1.00 - g$ sample of the same material decays at 151 Bq,and assume this rate has also held in the past. The half-life of ¹⁴C is 5730 years. How old is the sample?

• A) 8980 years
• B) 6230 years
• C) 17,000 years
• D) 8530 years

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