Jasoncookies23 Jasoncookies23

11-09-2019
Biology

contestada

FAST PLEASE HELP ME
Question 15
How many half-lives does it take for a radioactive substance to decay until only one quarter of the original substance remains?
A
one

B
two

C
three

D
four

Respuesta :

prettykitty57 prettykitty57

11-09-2019

I think the answer is two

Answer Link

robertbryant50017 robertbryant50017

19-09-2019

Answer: three

Explanation:

Answer Link

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