The table shows the amount of radioactive element remaining in a sample over a period of time.
Radioactive Decay Rate
Amount of Radioactive Sample ( grams) Time( years)
56.0. 0
47.1 400
39.6 800
33.3 1,200
28 1,600
Part 1: What is the half-life of the element? Explain how you determined this.
Part 2: How long would it take 312 g of the sample to decay to 9.75 grams? Show your work or explain your answer.
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The table shows the amount of radioactive element remaining in a sample over a period of time.
Radi...
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