Number of radioactive atoms NX 1020 10 9 8 7 6 10 5 st 3 2...

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Number of radioactive atoms NX 1020 10 9 8 7 6 10 5 st 3 2 Semi-Log plot of radioactive decay 0 1 2 3 4 5 Time (hours) Exercise 3 Use the Semi-Log Plot of Radioactive Decay above to determine the half-life and the decay constant of the sample. a. Choose two points and calculate the decay constant and half-life from the exponential decay equation. b. Check your answer by estimating the half-life directly from the graph. Number of radioactive atoms NX 1020 10 9 8 7 6 10 5 st 3 2 Semi-Log plot of radioactive decay 0 1 2 3 4 5 Time (hours) Exercise 3 Use the Semi-Log Plot of Radioactive Decay above to determine the half-life and the decay constant of the sample. a. Choose two points and calculate the decay constant and half-life from the exponential decay equation. b. Check your answer by estimating the half-life directly from the graph.