Question 17.9: Using Half-Life Po-210 is an alpha emitter with a half-life ......
Using Half-Life
Po-210 is an alpha emitter with a half-life of 138 days. How many grams of Po-210 remain after 552 days if the sample initially contained 5.80 g of Po-210?
Step-by-Step
The amount of Po-210 left after 552 days is 0.363 g.
| Mass of Po-210 (g) | Number of Half-Lives | Time (days) |
| 5.80 | 0 | 0 |
| 2.90 | 1 | 138 |
| 1.45 | 2 | 276 |
| 0.725 | 3 | 414 |
| 0.363 | 4 | 552 |
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