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A 16ug sample of sodium-24 decays to 1.0 ug in 60 h. What is the half-life,...
Submit 1128.0% of a sample of silver-112 decays in 1.52 hours, what is the half-life of this isotope (in hours)? hours 12 3 6 4 0 x10口
A radioactive isotope decays by B" emission with a half-life of 1.0 min. During the first 1.0 min, a particular sample emits 1000 B particles. During the next 1.0 min, the number of B- particles this sample will emit will be closest to 250. 500. O 1000. 1500. 2000.
Sodium-24, which is used to locate blood clots in the human circulatory system, has a half-life of 15.0 hours. A sample of sodium-24 with an initial mass of 28.5 g was stored for 45.0 hours. How many grams of sodium-24 is left in the sample after 45.0 hours?
What is the half‑life of an isotope that decays to 25% of its original activity in 33.7 h? What is the half‑life of an isotope that decays to 12.5% of its original activity in 10.2 h?
These questions are about radioactive half-life. 22. 256 grams of a radioactive sample decays to 4 grams in 120 minutes. What is the half life of the sample? These questions are about radioactive half-life 22. 256 grams of a radioactive sample decays to 4 grams in 120 minutes. What is the half life of the sample? 22.
These questions are about radioactive half-life. 22. 256 grams of a radioactive sample decays to 4 grams in 120 minutes. What is the half life of the sample? These questions are about radioactive half-life. 22. 256 grams of a radioactive sample decays to 4 grams in 120 minutes. What is the half life of the 22. sample?
Q. 86 and 87 i. E) 1.8 x 104 mCi 86) Sodium-24 has a half-life of 15 hours. How many hours is three half-lives? A) 60 hours B) 45 hours C) 30 hours D) 15 hours E) 7.5 hours 87) Iodine 131 has a half-life of 8.0 days. An I-131 sample has an initial activity of 32 m What is the activity after 24 days? A) 96 mCi B) 16. mCi C) 8.0 mCi D) 4.0 mCi E) 2.0 mCi
A sample decays to 50% of its original activity after 24.3 hours. Determine the sample\'s half-life.
Sodium-24, which is used to locate blood clots in the human circulatory system, has a half-life of 15.0h. A sample of sodium- 24 with an inital mass of 30.0 g was stored for 60.0 h. How many grams of sodium-24 are left in the sample after 60.0 h? mass remaining:
Rubidium-87 decays by ß production to strontium-87 with a half life of 4.7 x 1010 years. What is the age of a rock sample that contains 104.9 ug 7Rb and 4.3 ug 87Sr? years old Assume that no 87Sr was present when the rock was formed. The atomic masses are given in the table below: Nuclide Atomic Mass 87Rb 86.90919 87Sr 86.90888