In the Following Diagrams,A Represents a Radioactive Isotope That Decays

question 107

Multiple Choice

In the following diagrams,A represents a radioactive isotope that decays into a new isotope,X.Each circle represents 1 mmol of atoms. t = 0: t = 25.0 s: What is the half-life of A?

• A)6.25 s
• B)18.8 s
• C)25.0 s
• D)50.0 s
• E)60.2 s

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