Answer
$8.013$ grams of carbon-14
Work Step by Step
$A=A_{0}e^{kt}$
For $A=16e^{-0.000121t}, t=5715$
$A=16e^{-0.000121\times 5715}$
$A=8.013$ grams of carbon-14 will be present in $5715$ years.
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