nsmendesarmyc nsmendesarmyc

15-09-2017
Biology

contestada

How long will it take three quarters of a sample of a radioactive
element to decay if its half-life is 4 days?
a. 2 days
b. 3 days
c. 4 days
d. 8 days

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Аноним Аноним

15-09-2017

your answer is b your welcome.....

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