The half-lives of different radioisotopes are given in the table. Radioisotope Half-life (min) argon-44 12 lead-196 37 potassium-44 22 indium-117 43 If the initial amount of indium-117 is 3.6 g, how much indium-117 is left in the body after 86 min? mass:

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

A: Given  Half life of Lead - 196     = 37 min  Initial Amount (A)0          =  64 mg Remaining Amount…

Q: If you accidentally spill phosphorus-32 onto your shoe, how long would it take before 99.9% of the…

A:

Q: Thorium-234 has a half-life of 24.1 days. Suppose the initial amount of Thorium-234 is 162.9 mg,…

A: All natural and artificial radioactive decays follows first order kinetics The integrated rate…

Q: The half-lives of different medical radioisotopes are given in the table. If the initial amount of…

A: Chemical kinetics is the branch of chemistry that mainly deals with the rate of reaction and change…

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: (11) Lead-211 is a radioactive isotope with a half-life of 36.1 minutes. How long will it take for…

A:

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

A: We know that,→ Radioactivity Phenomena follow first oroen kinetics.So, Rate = KA1 K → Rate…

Q: The number of radioactive nuclides in a sample decays from 3.80 x to 1020 19 9.50 x 10 in 58.0…

A:

Q: A pure sample of tritium, 3H, was prepared and sealed in a container for a number of years. Tritium…

A:

Q: Technicium-104 has a half-life of 18 minutes.If the initial mass is 100.0g,how much remains after 90…

A:

Q: The half-lives of different medical radioisotopes are given in the table. If the initial amount of…

A: Solution :     Half-life is the time required for the given amount of radioactive sample to reduce…

Q: A substance has a half-life of 2.045 minutes. If the  initial amount of the substance was 132.8…

A: Given,  Half-life, t1/2  = 2.045 minutes Initial ammount, A0 = 132.8 gram

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: (6) After three half-lives, 100% (A) (B) 50% (C) 25% (D) 12.5% % of the initial isotope of a…

A:

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

A:

Q: 1 A radioisotope has a half life of 4 days. How much of a 20-gram sample of this radioisotope…

A:

Q: Radioactive radon-222, found in many homes, is a potential health hazard. The half-life of radon-222…

A: Radon 222 is a radioactive substance which undergoes radioactive decay Here we are required to find…

Q: The half-lives of different medical radioisotopes are given in the table. If the initial amount of…

A: It is radioactive substance. Every radioactive substance follows first order reaction kinetics. So,…

Q: 2.103 Phosphorus-32 has a half-life of 14.3 days. Beginning with a 2.00 pug sample of this…

A:

Q: Iodine-131 has a half-life of 8 days. What fraction of the original sample would remain at the end…

A: Half life is the period at which concentration of reactant reduces half of its original value.

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: I-131 has a half-life of 8.04 days. If a sample initially contains 20.0 g of I-131, approximately…

A: Interpretation -  To determine the amount of I-131 after 32 days when I-131 initially contains 20g…

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

A: Answer: Since, nuclear reactions are first order reactions, therefore to solve this question we will…

Q: The beta decay of cesium-137 has a half-life of 30.0 years. How many years must pass to reduce a 25…

A: We have given that The beta decay of cesium-137 has a half-life of 30.0 years. How many years must…

Q: PET scans require fluorine-18, which is produced in a cyclotron and decays with a half-life of 1.83…

A: Given: Half life, T1/2 = 1.83 hrVelocity of transport, v= 60.0 miles/hrfinal Concentration of F-18 =…

Q: Iodine-131 has a half-life of 8.0 days. How long will it take 10 μg of 131I to decrease to 1/100 of…

A: We have given the half life of 131I that is t1/2 = 8 days from this we can find the out the decay…

Q: 39. If the half-life of phosphorus-32 is 14.3 days, how much of a 200. mg sample of phosphorus-32…

A: Given data,  Half life of phosphorus-32 is 14.3 days  Total amount of Phosphorus-32 is 200 mg

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: The half-lives of different medical radioisotopes are given in the table. If the initial amount of…

A: Radioactive decay follows First order kinetics .Initial amount of iodine-131 is 32 mCiHalf-life of…

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

A: Given: Initial amount of potassium-44 = 96.0 mg Final amount of potassium-44 = 12.0 mg Half-life for…

Q: The half-life of thorium-227 is 18.72 days. How many days are required for three-fourths of a given…

A:

Q: A radioactive isotope decays from 60 grams to 15 grams in 20 seconds. What is its half-life? a) 20…

A: The radioactive decay is an example of first order reaction.

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: After 40.0 days, how much Ac-225 remains if the starting mass was 94.0 g? Ac-225 has a half life of…

A:

Q: Proton-85 has a half-life of 10 years. Approximately what percentage of Kr-85 produced from the…

A: Half life of Kr-85 = 10 yr % of Kr remain active = ?

Q: The half-life of Ga-67 is 77.9 hours. How long will it take Ga-67 to decay and lose 95% of its…

A:

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

A:

Q: . If the half-life of a radioisotope is 3

A: Half life (t1/2 or t50%) :  The time required to consume half of the initial reactant is called "…

Q: If the initial sample is 8.00 g, what mass of the original iridium-192 remains after 105 days? 0.675…

A:

Q: at time zero, there are 10.0 grams of W-187. If the half-life is 23.9 hours, how much w-187 is…

A: At time zero, there are 10.0 grams of W-187. If the half-life is 23.9 hours, the W-187 present after…

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: How much of a 0.15 g sample of U-238 after the passage of 3200 years? Half-life is 4.01x10^9 years.

A:

Q: After 103 days, only 2.3 g of a radioisotope remains from a sample that originally has 150 g of it.…

A:

Q: The half‑lives of different medical radioisotopes are given in the table. If the initial amount of…

A:

Q: Given the half-life of Carbon-14 is 5770 years, how much of a 540 gram sample is left after 10000…

A: For the given radioactive decay process: Rate constant, k =?  Half-life=5770 years According 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: The half-life of radon-222 is 3.8 days. How much of a 100 gram sample is left after 15.2 days?

A: Half life is the time taken by the original compound to reduce to it's half.

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…

Writing and Balancing Nuclear Equations

A nuclear equation is a symbolic representation of a nuclear reaction using certain symbols. It is studied in nuclear chemistry and nuclear physics.