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Paper 4Theory (Extended)2 marks
A scientist measures the decay of a radioactive substance over time and records the following data:
Data Table
Radioactive Decay Data
| Time (years) | Amount Remaining (g) |
|---|---|
| 0 | 100 |
| 10 | 50 |
| 20 | 25 |
| 30 | 12.5 |
- a[2]
Determine the half-life of the substance from the data provided.
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