The table shows the amount of radioactive element remaining in a sample over a period of time. 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.
The table shows the amount of radioactive element remaining in a sample over a period of time. 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.
Chemistry for Today: General, Organic, and Biochemistry
9th Edition
ISBN:9781305960060
Author:Spencer L. Seager, Michael R. Slabaugh, Maren S. Hansen
Publisher:Spencer L. Seager, Michael R. Slabaugh, Maren S. Hansen
Chapter10: Radioactivity And Nuclear Processes
Section: Chapter Questions
Problem 10.83E
Question
The table shows the amount of radioactive element remaining in a sample over a period of time.
| 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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