If 10 mg of iodine 131 is given to a patient, how much is left after 24 days? The half-life of iodine-131 is 8 days. a. 1.25mg с. 10g b. 1.25g d. 10mg

Q: Sodium-24 has a half-life of 14.8 hours. How much of a 587.7 mg sodium-24 sample will remain after…

A: All radioactive decay processes follow first order kinetics.

Q: the half life of oxygen-15 is 2 minutes. what fraction of a sample of O-15 will remain after 5…

A:

Q: The radioactive decay of a sample containing an unknown radioactive isotope produced 6274…

A: Given Initial disintegration = 6274 Final disintegration = 1898 Time = 15.31 days

Q: A 16.0 g sample of technicium-99m has a half-life of 6.0 hours. How much sample remains 24 hours…

A: As per the given information in the question, First calculate the rate constant (K) of the…

Q: How many half‑lives of the unknown radioactive substance have occurred?

A: As we know that decay of radioactive substance follows first order kinetics

Q: Consider a radioactive sample with a half-life of one week. How much of the original sample will be…

A: Half-life period is defined as the time taken for amount of the sample to reduce to half of its…

Q: A 739.7 ng sample of an unknown radioactive substance was placed in storage and its mass measured…

A:

Q: How much of a 24 g sample of radium 226 will remain unchanged at the end of 3 half-life periods?

A: Given,  Mass of the sample of radium 226 = 24 g  Mass of the sample of radium 226 remain unchanged…

Q: PET studies require fluorine-18, which is produced in a cyclotron and decays with a half-life of…

A: The maximum distance that the cyclotron can be transported has to be given,

Q: The isotope nickel-63 has a half-life of 100 years. If a tested sample has five grams of nickel-63…

A:

Q: Radioactive Decay The half-life of palladium-100 is 4 days. After 20 days a sample has been reduced…

A: Given Data:  Half life of Pd-100 = 4 days  Reduced mass = 0.375g The formula of half life is given…

Q: What is the half-life of an element that begins with 100g, and 18.8g remains after 113 minutes.

A: Half life of radioactive element-is the time needed for given number of its nuclei to decay exactly…

Q: lodine has a half-life of 8.07 days. What fraction of a sample of iodine-131 will be left after…

A: The given information is as follows: The half life of the Iodine = 8.07 days The fraction of sample…

Q: Calculate the mass of sodium-24 that will remain in a 20.0 g sample after 75 hours. Sodium has a…

A: Chemical kinetics is branch of chemistry in which we deal with the speed at which rate of reaction…

Q: Barium -122 has a half life of 2 minutes. Suppose you obtain a sample weighing 10.0g and it takes 10…

A: Since the decay reactions are first order reactions. Hence the half life of reaction will remain…

Q: The half-lives of different radioisotopes are given in the table. Radioisotope Half-life (min)…

A:

Q: A 120-mg sample of technetium-99m is used for a diagnostic test. If technetium-99m has a half-life…

A: Rate of a reaction determines the speed with which a reaction proceeds. First order reaction is a…

Q: A radioactive isotope decayed to 17/32 of its original mass after 60 minutes. Find the half-life of…

A: All radioactive decays follows first order kinetics . The integrated rate equation for first order…

Q: You have a sample of Bismuth-212 to prepare for an upcoming medical test.  This isotope has a…

A: The radioactivity follows first-order kinetics. The half-life relates to the rate constant, k for…

Q: (Simplify your answers. Do not round until the final answers. Then round to four decimal places as…

A: All radioactive decays are first order reaction. The half-life of first order reaction is given by,…

Q: (19] There are 40 grams of radioactive substance at one point in time. After two hours, only 30…

A: The half-life of a quantity is the amount of time it takes to decrease to half of its original…

Q: If 7.0 grams of a sample decays to 0.44 grams in 2.0 hours, what is the half-life time of the…

A: For calculation of half life first of all we need rate constant of the reaction, which can be…

Q: lodine-131 has a half-life of 8.1 days. How much of 2 g of the isotope will remain after 56.7 days?…

A: The nuclear half-life of a radioactive isotope tells you how much time must pass in order for half…

Q: 2. The radioactive potassium-40 isotope decays to argon-40 with a half-life of. a. Write a balanced…

A: t1/2 = 1.2 x 109 year Initial Mass of K = 100 g Remaining Mass = 18 g

Q: II 24 Iours, what is the half-life of Ra-226 in years? 27 3. Arsenic - 70 has a half life of 140…

A: As per our guidelines we can only solve first question. Please resubmit the other questions as next…

Q: The half-lives of different radioisotopes are given in the table. Radioisotope Half-life (min)…

A: For the Potassium-44,  Half life, t1/2 = 22 min Initial amount of Potassium-44, A0 = 64 mg After…

Q: The half-life of cobalt-60 is 5.27 yr. How much of a 1.000-mg sample of cobalt-60 is left after…

A:

Q: If the half-life of a particle is 2 days, how much of this substance remains after 8 days? Select…

A: Since you have posted multiple questions, we are entitled to answer the first only. Given: Half-life…

Q: A 120-mg sample of technetium-99m is used for a diagnostic test. If technetium-99m has a half-life…

A: The basic formula for half life equations is A= amount remainingP= original amountt= elapsed…

Q: A radioactive material decays at a rate proportional to its amount. If the material has a half-life…

A: To solve this question, first find out rate constant using half life and then use that to find out…

Q: At a given time, there are 1.2 mg of a radioactive substance present. After 6 hours there is only…

A: To solve this question, first find out the rate constant of radioactive substance and using that…

Q: A 50.0 mg sample of an unknown radioactive substance was placed in storage and its mass measured…

A:

Q: The half-life of tritium is 12.4 years. How long will it take for 15% of a sample of tritium to…

A: The radioactive decays are first order reaction.

Q: The half-life of 90Sr is 29 years. What fraction of the atoms in a sample of 90Sr would remain 175…

A:

Q: Iodine-131 has a half-life of 8.0 minutes. How many half-lives will pass in 120 minutes?

A:

Q: The half-life of Oxygen-15 is 2 minutes. What fraction of a sample of O-15 will remain after 5 half…

A: Given,half-life = 2 minutesNeed to find out the fraction remaining after five half-lives.

Q: A 180.9 ng sample of an unknown radioactive substance was placed in storage and its mass measured…

A:

Q: Technetium-99m, an important radionuclide in medicine, has a half-life of 6.0 hours. What percentage…

A:

Q: The half-lives of different radioisotopes are given in the table. Radioisotope Half-life (min)…

A:

Q: Sodium-24 has a half-life of 14.8 hours. How much of a 595.7 mg sodium-24 sample will remain after…

A: Radioactivity are 1st order reaction- given T1/2=14.8 hourk=0.693t12⇒0.69314.8 hour=0.0469 hour-1

Q: After 4.00 years a 2.0 g sample of a radioisotope remains from a sample that had an original mass of…

A:

Q: . If Gallium-68 has a half-life of 1.13 hours, how much of a 10.0 mg sample is left after 5.69…

A: 1.  given :-  initial amount of sample = 10.0 mg  half life of Gallium-68 (t1/2) = 1.13 hours  To…

Q: The half-lives of different radioisotopes are given in the table. Radioisotope Half-life (min)…

A: Given: The half-Life of lead= 37 min Initial Concentration of lead [A]0= 68.0 mg Final Concentration…

Q: How long will it take a radioactive sample of iodine-131 (half-life 8.07 d) to lose

A: The spontaneous disintegration of alpha, beta and gamma radiations by a substance irrespective of…

Q: Calcium – 47 has a half-life of 4.5 years . How long will it take a 100 mg sample to drop to 12.5…

A:

Q: A 371.9 ng sample of an unknown radioactive substance was placed in storage and its mass measured…

A: On passing a half life the concentration of the substance becomes half. Let the substance has passed…

Q: 5. Strontium-90 has a half life of 28.8 years. If you start with a 10 gram sample of Strontium-90,…

A: We have to predict the amount after 115.2 years.