The Half-Life of Carbon-14 Is Approximately 5,700 Years

Multiple Choice

The half-life of Carbon-14 is approximately 5,700 years. Using this information scientists have been able to determine the age of some artifacts left by humans. A scientist wants to know approximately how old a piece of wood was that she found on the floor in an old cave that had recently been discovered. She removed the wood (with permission) to her laboratory. Her wood sample contained 2 grams of Carbon-14. If the age of the wood was determined to be 22,800 years old, how much Carbon-14 originally existed in this piece of wood?

A) 32 grams
B) 16 grams
C) 12 grams
D) 8 grams
E) 4 grams