Situation: Find the substance's half-life, in days.
Round your answer to the nearest tenth.
A 25 gram sample of a substance that's
used for drug research has a k-value of
0.1229.
Enter the correct answer.
N = Noe
-kt
DONE
No - initial mass (at time t = 0)
DOO
N = mass at timet
k = a positive constant that depends on
the substance itself and on the units
used to measure time
t = time, in days
P