🤓 Based on our data, we think this question is relevant for Professor Alghoul's class at GSU.
We’re being asked to determine the half-life of cobalt–60.
Recall that half-life is the time needed for the amount of a reactant to decrease by 50% or one-half.
The half-life of a first-order reaction is given by:
t1/2 = half-life
k = decay constant
When a 2.50 g sample of cobalt-60 is stored for 10 years, 0.669 g remain. What is the half-life of cobalt-60?
a) 26.3 y
b) 12.1 y
c) 11.5 y
d) 2.59 y
e) 5.25 y
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