Question

A sample of wood that originally contained 100 frames of carbon-14 (half life = 5,568 years) now only contains 25 grams of carbon-14. Approximately how many years ago was this sample part of a living tree

Answer 1

The answer to your problem is: 11136 years

Step-by-step explanation:

Data

Original amount of carbon-14: 100 frames

half life of carbon-14 = 5,568 years

Only contains 25 grams of carbon-14

Question: how many years ago was this carbon-14 part of a tree.

Process

100 grames of carbon-14

50 grames of carbon-14 one half life

25 grames of carbon-14 one half life

Total two half-lifes

1 half-life ---------------- 5568 years

2 half -lifes ------------- x

x = 2x5568 / 1 = 11136 years