The isotope calcium-41 decays into potassium-41, with a half-life of 1.03 × 105 years. There is a sample of calcium-41 containing 5 × 109 atoms. How many atoms of calcium-41 and potassium-41 will there be after 4.12 × 105 years?
A.
3.125 × 108 atoms of calcium-41 and 4.375 × 109 atoms of potassium-41
B.
6.25 × 108 atoms of calcium-41 and 4.6875 × 109 atoms of potassium-41
C.
6.25 × 108 atoms of calcium-41 and 4.375 × 109 atoms of potassium-41
D.
3.125 × 108 atoms of calcium-41 and 4.6875 × 109 atoms of potassium-41
Answers: 2
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The isotope calcium-41 decays into potassium-41, with a half-life of 1.03 × 105 years. There is a sa...
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