A 1.00 L sample of water near a nuclear plant registered a 2.55 pCi of iodine–131. What is the concentration of iodine–131 is dissolved in the sample (in parts per million), given that the half – life of iodine–131 is 8 days, and its isotopic mass is 130.9061246 g/mol?

Q: The carbon-14 decay rate of a sample obtained from a young tree is 17.2 disintegration per minutes…

A: Given : T1/2 = 5715 years.

Q: The gallium-67 nuclide is used in tumor diagnostic applications. This has a half-life of 78.2 hours.…

A: given, half life =  78.2 hours  time = 5.00 days

Q: Neptunium-237 was the first isotope of a transuranium element to be discovered. The decay constant…

A:

Q: nuclide 22086X decays to a new nuclide Y by emission of two alpha particles and two beta particles.…

A: In alpha decay atomic mass decreased by 4 while atomic number decreased by 2 ,it is also known as…

Q: Co-60 is used extensively in radiotherapy as a source of y-rays. Its half life is 5.27years. a) How…

A: half life = 5.27 years

Q: The half-life for the alpha decay of 226Ra to form 222Rn is 1.60×10 y. Suppose the energy of the…

A: Solution           Hence the temperature of water 23.79 c

Q: Barium-142 is an beta emitter with a half-life of 11.0 min. If we start with 2.500 g of 142Ba, what…

A: The number of half-lives (n) can be calculated as

Q: Chemists have determined that elements with atomic numbers greater than 92 are all radioactive. In…

A: Given that, as the atomic number and mass number increase, the transuranium elements become less…

Q: Krypton-87 has rate constant of 1.5 x 10 -4 / s. What is the activity of a 2.0 mg sample?

A: Welcome to bartleby ! Introduction : We have to calculate activity of sample

Q: 25. Iodine-131 is a radioactive substance that can be used to treat certain thyroid conditions. It…

A: Q25) Given that: Half life = 8 days Mass of Iodine = 40 mg Remain after 4 half lives = ?

Q: Radioactive decay can be described by the following equation In A = In A, - kt where Ag is the…

A:

Q: The radioactive isotope Cs decays by beta emission. If the mass of a sample of cesium-137 decays…

A: Here we are required to find the half life of caesium-137 .

Q: Selenium-73 decays by positron emission with a half-life of 7.15 hours. What mass remains from a…

A:

Q: Bi-191 has a half-life of only about 12 seconds. A large radioactive sample contains only 6.2 x 109…

A: Half life of Bi-191 = 12 sNumber of atoms of Bi-191 = 6.2 x 109 atomsNumber of moles of Bi-191 = ?…

Q: Fluorine-18 is a radioactive isotope commonly used in medicine.  It has a half-life of 110 minutes.…

A:

Q: A patient is given 0.050 mg of technetium-99m, a radioactive isotope with a half-life of about 6.0…

A: Given,0.050 mg of technetium-99m,Half-life is 6.0 hours.1.0×10-3 mg

Q: A hospital needs 0.8 g of 133Xe for a lung-imaging test. If it takes 7 days to receive the shipment,…

A: We have to calculate the amount to be ordered.

Q: A rock constains Pb-206 to U-238 mass ratio of 0.245: 1.00. Assuming the rock did not contain any…

A:

Q: CHEMWORK Rubidium-87 decays by B production to strontium-87 with a half life of 4.7 x 1010 years.…

A:

Q: Mr. Albedo stumbled upon an unknown material in an abandoned laboratory. He believes that this…

A:

Q: A patient is given 0.050 ug of technetium-99m, a radioactive isotope with a half-life of about 6.0…

A: Given: Mass of technetium-99m = 0.050μg half life= 6.0 h Mass of technetium to decay= 1.0×10-3μg

Q: Iodine-131, in a sodium iodide tablet, is used to measure the activity of the thyroid gland. If a…

A: Nuclear chemistry is a branch of chemistry which involved the study of reactions in the nucleus. The…

Q: Copper-64 decays via positron emission with a half-life of 12.8 hours. Please write out the balanced…

A: Positron emission The positron emission process is a conversion of 1 proton into 1 neutron. The…

Q: Bi-191 has a half-life of only about 12 seconds. A large radioactive sample contains only 4.1 x 109…

A: Half life of Bi-191 = 12 sNumber of atoms of Bi-191 = 4.1 × 109 atomsNumber of moles of Bi-191 = ?…

Q: Rubidium-87 decays by B production to strontium-87 with a half life of 4.7 × 1010 years. What is the…

A: Radioactive decay reactions follow first order kinetics.

Q: Gallium-67 is used medically in tumor-seeking agents. The half-life of gallium-67 is 78.2 hours. If…

A:

Q: A rock found in the Australian Outback contains 438 g of Pb-206 for every 1.00 g of U-238. How old…

A: The objective of the question is to determine the age of a rock based on the ratio of Pb-206 to…

Q: The half-life of 123I is 13 hr.  How much of a  64 mg sample of 123I is left after 26 hours?

A: The isotope of iodine, 123I, undergoes decay in accordance with first order kinetics. The half-life…

Q: Nickel-63 undergoes beta decay to form copper-63. At time = 0, a closed vial contains 55.3 grams of…

A: The radioactive decay follows first order kinetics.The integrated rate law for the first order…

Q: At 7:00 A.M., a patient receives a 1.40-mg dose of I-131 to treat thyroid cancer. Part A If the…

A:

Q: The radioactive nuclide P# has a half-life of 14.3 days. How long would a waste containing 10 mg/L…

A: Answer: Radioactive reactions are first order reactions, therefore integrated rate law of first…

Q: Ten grams of the plutonium isotope 239Pu were released in a nuclear accident. How long will it take…

A: Step : 1               How long will it take for the 10 grams to decay to 1 gram?

Q: 32P is a radioactive isotope with a half-life of 14.3 days. If you currently have 62.7 g of 32P, how…

A:

Q: Supply the missing particles of the following nuclear reactions. 239 94Ри > 235 Co 60 2Ni+ ? 60 28

A: To solve this problem we have to consider the mass number and atomic number of given partical .

Q: The carbon-14 decay rate of a sample obtained from a young tree is 0.252 disintegration per second…

A: Decay process is a first order reaction. Therefore we have to put the integrated rate law for first…

Q: A worker in a laboratory unknowingly became exposed to a sample of radio-labeled sodium iodide made…

A:

Q: Potassium ion is present in foods and is an essential nutrient in the human body. One of the…

A: Given: Amount of KCl in given sample = 1.00 g Natural abundance of 40K+ ion = 0.0117% We know, the…

Q: In the next step of the neptunium-237 decay series, very unstable francium-221 is produced.  Given…

A: We know that the radioactive decay follow first order reaction.

Q: Iodine‑125 (I125I125) is used to treat, among other things, brain tumors and prostate cancer. It…

A: Answer is as follows

Q: 2. Strontium-90 has a half-life of 28 years. If a sample was tested in 1980 and found to be emitting…

A:

Q: The half-life for the alpha decay of 226Ra to form 222Rn is 1.60×10 y. Suppose the energy of the…

A:

Q: phosphorus-32 is a radioactive isotope with a half-life of 14.3 days.14.3 days. If you currently…

A:

Q: Radon-222 has a half-life of 4 days. How long does it take 234 mg of radoon-222 to reach 14.6 g? 4…

A:

Q: Plutonium-238

A: We wil use first order kinetics formula to get the answer

Q: The radioactive isotope phosphorus-32 is often used in biochemical research. Its half-life is 14.28…

A: Given: The half-life of phosphorus-32 is 14.28 days. The mass of sample of K332PO4 is 118 mg.