Question

11. If a sample known to be about 10,740 years old has 400 carbon-14 atoms, how many atoms were in the sample when the organism died?​

Answer 1

1467 atoms

Step-by-step explanation:

5730 yrs = carbon 14 half life

10 740 / 5730 = 1.87 half lives

400 = C (1/2)^1.87

C = original = ~1467 atoms