Mathematics, 28.08.2021 04:20 oscarruiz
Select the correct answer.
Plutonium–238 has a yearly decay constant of 7.9 × 10-3. If an original sample has a mass of 15 grams, how long will it take to decay to 12 grams?
(At = A0e-kt)
A.
3 years
B.
12.3 years
C.
28.3 years
D.
139.1 years
Answers: 2
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