iamacoolbro06 iamacoolbro06

30-04-2022
Chemistry

contestada

If a sample originally had 120 atoms of carbon-14, how many atoms will remain after 17,145 years? Assume the half life of C14 is 5715 years.

Respuesta :

jsimpson11000 jsimpson11000

04-05-2022

Answer:

15 atoms left after 3 half lives

Explanation:

17145 y / 5715 y/halflife = 3 half lives

(1/2)^3 = 1/8 of original is left

1/8 ( 120 atoms) = 15 atoms left

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