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?
If you have 40 grams of a radioisotope with a half life of 10 hours, and...
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?
(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?
The half-life of an isotope of phosphorus is 14 days. How much of 40 grams of phosphorus would be left after 42 days? 5g LO 20 g 10 g 2.5 g
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?
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...
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...
Nuclear imaging tracers have a radioactive half life that depends on the radioisotope. For example, the half-life of 18F is 110 minutes. However, the tracer is also eliminated from the body with a biological half life that depends on the tracer molecule. For example, a cardiac imaging agent called Cardiolite is eliminated from the body with a half life of 6 hours. The effective half life of a nuclear imaging agent is calculated as 1/teff 1/trad 1/tbio, where teff is...
The half-life of the radioactive element unobtanium-43 is 10 seconds. If 176 grams of unobtanium-43 are initially present, how many grams are present after 10 seconds? 20 seconds ? 30 seconds? 40 seconds? 50 seconds? The amount left after 10 seconds is grams The half-life of the radioactive element unobtanium-43 is 10 seconds. If 176 grams of unobtanium-43 are initially present, how many grams are present after 10 seconds? 20 seconds? 30 seconds? 40 seconds? 50 seconds? The amount left...
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?
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