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Using the half-life graph of cobalt-57, choose ALL the statements that are accurate.
es )
A)
The half-life of Co-57 is 20 days.
B)
The half-Life of Co-57 is 10 days.
C)
After fifty days, there is 0% or no Co-57 remaining.
D)
After twenty days have elapsed, about 25% of the Co-57 remains.
E)
Scientists have an 8 gram sample of Co-57. After thirty days, 1 gram
remains.
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