The half-life of the first order radioactive decay of
is 1.30 10 9 years. How long, in years, would it take for 25% of the
to decay?
A) 9.8×108
B) 3.3×107
C) 4.6×107
D) 5.4×108
E) 1.30×109
Correct Answer:
Verified
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