(9 points) a. The half-life of a radioisotope is 2.4 minutes. If you had 100 grams...
The half-life of Zn-71 is 2.5 minutes. If one had 100.0 g at the beginning, how many grams would be left after 7.5 minutes has elapsed? Please show work.
The half life of Zn -71 is 1.2 minutes. If you had a 120.0 g of this material before any radioactive decay, how many grams would be left after 4.8 minutes have elapsed?
If you start with 16 million nuclei of a radioisotope with a half life of 10 minutes, how many will be left after 110 minutes?
If you have 40 grams of a radioisotope with a half life of 10 hours, and you keep it in your lab for 30 hours, how much of the isotope will be left?
5 of 15 A radioisotope tracer has a half-life of 2 minutes. If a level of <1% is considered safe, when would the soonest a sample injected with the tracer be safe to handle? about 2 minutes about 14 minutes about 99 minutes about 100 minutes 6 of 15 A reaction mechanism consisting of three steps, two fast and one slow, cannot be dependent on the slow step second order first order zero order
9. Technetium-99m is an ideal radioisotope for scanning organs, because it has a half-life of 6.0 hr and is a pure gamma emitter. Suppose that 80.0 mg were prepared in the technetium generator this morning. How many milligrams would remain after: a. one half-Life b. two half-lives c. 18 hrs. d. 24 hrs.
a certain radioisotope has a half life if 6 hrs. if you start out with 50g of the isotope, how much of it is left after 2 days?
The half-lives of different radioisotopes are given in the table. Radioisotope Half-life (min) argon-44: 12min, lead-196: 37min, potassium-44: 22min, indium-117: 43min If the initial amount of indium-117 is 7.2 g, how much indium-117 is left in the body after 86 min?
The half-lives of different radioisotopes are given in the table. Half-life (min) Radioisotope argon-44 12 lead-196 37 22 potassium 44 indium-117 43 If the initial amount of potassium-44 is 8.8 g, how much potassium-44 is left in the body after 44 min? mass: g TOOLS x10 What is the half-life of an isotope that decays to 12.5% of its original activity in 70.6 h? half-life: h The half-lives of different radioisotopes are given in the table. Half-life (min) 12 Radioisotope...
224. You have 83.525g of a radioactive element with a half-life of 52.01minutes. After 254.3 minutes have passed, how many grams of the radioactive element remain? Report your answer to 2 decimal places.