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Physics, 11.04.2021 04:20 minileiva211

The half-life of argon-44 is 12 minutes. Suppose you start with 20 atoms of argon-44 and wait 12 minutes. How many atoms of argon-44 will be left?
A. 20 atoms
B. 40 atoms
C. 10 atoms
D. 5 atoms
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