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Brums [2.3K]
3 years ago
8

C-14 has a half life if approximately 5700 years how many years will it take for the radioactivity of a sample to reach one-four

th of its original amount
A. 1425
B.5700
C.11400
D. 22800
Mathematics
1 answer:
qaws [65]3 years ago
3 0
This is an easy half-life problem.
Every half-life, a substance loses half its radioactivity.  So, after 2 half-lives, a substance will have a quarter of its radioactivity.
2 * 5,700 = 11,400 years
answer is C

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