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ENTRANCE TEST – 2015 :: Discussion
| 10. | The half-life of N2O5 at 0 oC is 24 minutes. How long will it take for sample of N2O5 to decay to 25% of its original concentration? | |
| A. | 24 minutes | |
| B. | 72 minutes | |
| C. | 120 minutes | |
| D. | 48 minutes | |
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