Carbon-14 has a half-life of 5730 years. In a plant fossil, you find that the 14C has decayed to 1/8.00 of the original amount. How long ago was this plant alive?

Respuesta :

0 Half Life = 0 Years = 100% 
1 Half Life = 5,730 Years = 50%
2 Half Life = 11,460 Years = 25%
3 Half Life = 17,190 Years = 12.5%

1/8 = 12.5% Hence = 3 Half Life = 17,190 Years