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?
a certain radioisotope has a half life if 6 hrs. if you start out with 50g...
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?
Part I-Essay questions Please show all your work for complete credit 21. If a certain radioisotope has a decay constant of 1.2x10 'days a. What is the half-life of this isotope? b. How much of a 2.00 kg sample of this isotope will last after 10 days? 22. Determine the mass.of Fe that can form when 40.0 A current is passed through PeCjo) for 5.00Hrs?
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...
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.
Iron-59 is a radioisotope that is used to evaluate bone marrow function. The half-life of iron-59 is 44.5 days. If you begin with 43.5 mg of this isotope, what mass remains after 55.2 days have passed? mg
Iron-59 is a radioisotope that is used to evaluate bone marrow function. The half-life of iron-59 is 44.5 days. How much time is required for the activity of a sample of iron-59 to fall to 19.0 percent of its original value? days Submit Answer values if needed for this question. Thallium-201 is used medically to diagnose heart problems. The half-life of thallium-201 is 72.9 hours. If you begin with 37.2 mg of this isotope, what mass remains after 189 hours...
(9 points) a. The half-life of a radioisotope is 2.4 minutes. If you had 100 grams at the beginning, how many grams would be left after 7.2 minutes has elapsed?
1. Consider a radioisotope “X” with a half-life of 2.5 years. Determine (to the nearest 0.1 mg) how much of a 1000 mg sample of “X” remains after a period of 17.5 years (show all work). 2. In radioactive dating using carbon-14 and carbon-12, why is it essential that carbon-12 be a stable isotope?
A. Consider a radioisotope “X” with a half-life of 2.5 years. Determine (to the nearest 0.1 mg) how much of a 1000 mg sample of “X” remains after a period of 17.5 years (show all work). B. In radioactive dating using carbon-14 and carbon-12, why is it essential that carbon-12 be a stable isotope?