How many days does it take for 16.0 grams of palladium

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Reference no: EM133429154

1. Sodium-24 has a half-life of 15 hours. How much sodium-24 will remain in an 36.5 gram sample after 60 hours?

2. After 42 days a 6.44 sample of an unknown isotope only contains 12.5% of the original sample. What is the half-life of this isotope?

3. Polonium-214 has a relatively short half-life of 164 seconds. How many seconds would it take for 9.5 grams of this isotope to decay to 3.125% of its original amount?

4. How many days does it take for 16.0 grams of palladium to decay to 1.0 g of its original amount if the half life is 17 days?

5. In 5.49 seconds, 1.20 grams of argon decay to leave only 0.15 grams. What is the half-life of this argon isotope?

6. If 100.0 g of an isotope decays until only 25.0 g is left after 11,460 years, what is the half-life?

7. Thallium-208 has a half-life of 3.053 min. How long will it take for an activity level of 4 curies to decay to 0.25 curies?

8. After 525 million years, only 1/32 of the original amount of a particular radioactive waste will remain. The half-life of this radioactive waste is how many million years?

9. Gold - 198 has a half-life of 2.7 days. How much of a 96 g sample of gold-198 will be left after 8.1 days?

Reference no: EM133429154

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