A sample of a newly discovered element, West Virginium, has been discovered.  A 167 mg sample has decayed to 35.07 mg  in only 24 years.   What is the half-life of West Virginium

Q: Phosphorus-32 is a radioisotope used in the treatment of leukemia and pancreatic cancer. If the…

A: Given, Phosphorus-32 in a sample decreases from 1.2g to 0.30g in 28 days . We have to calculate half…

Q: The half-life of radium-226 is 1.60X10³ yr. How manyhours will it take for a 2.50-g sample to decay…

A: Given :  t1/2 = 1.60 x 103 yr , [A0] = 2.50 g , [At] = 0.185 g Half-life : The time taken by any…

Q: The half-life of the radioactive isotope astatine-218 is 2.00 seconds. How long will it take for the…

A: all radioactive reactions are first order.  Here first calculate the rate constant with the help of…

Q: 5. The half life of radioactive 32P is 14.3 days. How long does it take for 100 mg of this isotope…

A:

Q: The half-life of strontium-90 is 28 years. H

A: Given t1/2 of a reaction is 28 years  decay constant  (λ) λ = 0.693t1/2     = 0.69328 y     =…

Q: The half-life of a decaying radioactive isotope is the time it takes for half of the original mass…

A: Here we are required to find the half life of the radio isotope

Q: Suppose the amount of a certain radioactive substance in a sample decays from 8.50 mg to 3.80 mg…

A: Given Initial concentration of radioactive substance =          8.50mg Final concentration of…

Q: A sample of 400g of radioactive​ lead-210 decays to​ polonium-210 according to the function…

A: Given data : A sample of 400g of radioactive​ lead-210 decays to​ polonium-210. According to the…

Q: Iodine-131 is used medically for the diagnosis of thyroid illnesses. The rate constant for t decay…

A:

Q: Iodine-131 used to treat hyperthyroidism, has a half-life of 8.04 days. For a sample containing 10.0…

A: Half life time = 8.04 days  Initial mass = 10.0 μg  Time = 32.2 days Mass remain after 32.2 days = ?…

Q: A zircon sample contains 4000 atoms of the radioactive element 235U. Given that 235U has a half-…

A: Time required to decay to 125 atoms os given below

Q: Iodine-131 is administered orally in the form of Nal(aq) as a treatment for thyroid cancer. The…

A:

Q: The half-life of radium-226 is 1.60 × 10' yr. How many hours will it take for a 2.50-g sample to…

A: The decay reactions are first order reactions. Hence for the first order reactions we can say that…

Q: An unknown radioisotope exhibits 8540 decays per second.After 350.0 min, the number of decays…

A: Nuclear reactions are a type of chemical process which lead to the formation of some new nuclei with…

Q: The half life of a certain substance is 5.6 days. How long will it take for 100 g of the substance…

A: Radioactive decay follows the first-order kinetics. The decay constant (λ) and half-life of a…

Q: 11. The half-life of a newly discovered element, Jimmium, is 55 minutes. How long will it take a…

A:

Q: If 28.0% of a sample of sodium-24 decays in 7.11 hours, what is the half-life of this isotope (in…

A: Given data,  Let, Initial amount of sample is [A]o=100% 28 % of sample is decay so remaining amount…

Q: If 28.0% of a sample of silver-112 decays in 1.52 hours, what is the half-life of this isotope (in…

A: Given values,      28% sample of silver=112 decays in 1.52 hours      that means 72% sample…

Q: PLutonium-239, one of the radioactive by-products of nuclear power, represents a serious was…

A: Chemical kinetics is the study of the reaction that how fast or slow a reaction is taking place. The…

Q: If 28.0% of a sample of erbium-165 decays in 4.74 hours, what is the half-life of this isotope (in…

A: Half life period of a reaction:-   The time during which the concentration of a reactant is Reduced…

Q: A sample of a newly discovered element, West Virginium, has a half-life of 288 years.  How long…

A:

Q: The isotope 166-Yb decays by electron capture with a half-life of 57 hrs. What percentage of the…

A: We have to calculate the percentage of isotope left

Q: In a sample of a radioactive isotope, 20.0 % has decayed after 30.0 days. Calculate the half-life of…

A: The nuclear reactions are a type of chemical processes which lead to the formation of some new…

Q: Iodine-131 is administered orally in the form of NaI(aq) as a treatment for thyroid cancer. The…

A: Since the decay reactions are first order reactions always hence for the first order reaction we can…

Q: If a rock sample was found to contain 4.65 x 10 mol of argon-40, how much potassium-40 would also…

A:

Q: Iodine-131 is administered orally in the form of NaI(aq) as a treatment for thyroid cancer. The…

A:

Q: If 28.0% of a sample of gallium-66 decays in 4.46 hours, what is the half-life of this isotope (in…

A:

Q: Strontium-90, a beta emitter, has a half-life of 28.1 yr. If 29.1 mg of 90Sr were incorporated into…

A:

Q: Isotope X has a half-life of 71.8 years. If a sample initially contains 676. mg of X, what mass of X…

A:

Q: A nuclear power plant emits into the atmosphere a very small amount of krypton-85, a radioactive…

A: Given: Half life (t1/2) = 10.76 years  Total time (T) = 25 years

Q: Radioactive iodine-131 decays with a half-life of 8.0 days. A chemist obtains a fresh sample of…

A:

Q: Q1 A sample of leather is analyzed by carbon-14 dating. The concentration of 14C in this sample is…

A:

Q: The half-life of cobalt-60 is 5.3 years. How long will it take for a 1.000-mg sample of cobalt-60 to…

A: Given: The half-life of Co-60 is 5.3 years. The initial amount of Co-60 is 1.000 mg. The amount of…

Q: Phosphorus-32 is a commonly used radioactive nuclide in biochemical research, particularly in…

A: Given: Mass of Na332PO4 = 175 mg = 0.175 g                                       (Since 1 g = 1000…

Q: mass of phosphorus-32,

A:

Q: If a tree dies and the trunk remains undisturbed for 1.620 x 104 what percentage of the original 1*C…

A:

Q: Na-24 is used in medicine to study the circulatory system. If one gram of Na-24 decomposes by beta…

A:

Q: If 28.0% of a sample of copper-64 decays in 6.16 hours, what is the half-life of this isotope (in…

A: We will use formula of rate constant first order kinetics

Q: Strontium-90 (90Sr) is a radioactive isotope with a half-life of 28.8 years. What percentage of this…

A: The radioactive disintegration falls in the type of first-order kinetics where reaction rate…

Q: If 28.0% of a sample of technetium-99 decays in 2.84 hours, what is the half-life of this isotope…

A:

Q: Radioactive phosphorus-32 decays with a half-life of 14.0 days. A chemist obtains a fresh sample of…

A: We have to calculate the number of days chemist have to do the experiment.

Q: Copper(II) acetate containing copper-64 is commonly used to study brain tumors. This isotope has a…

A:

Q: Q9. What is daily rate of decay for a radioactive medicine, used for cancer treatments, if its…

A: Radioctive  decays are the first order reaction  so formula for 1st  order reaction will be used

Q: Iodine-131 is a radioactive isotope. After 2.00 days, 84.2% of a sample of 13I remains. What is the…

A: Iodine- 131 is an radioactive isotope. Time = 2 days Final concentration of 131l  = 84.2% of sample…

Q: 3. Thorium-232 has a radioactive decay series that ultimately produces lead-208. What is the…

A:

Q: Phosphorus-32 is a commonly used radioactive nuclide in biochemical research, particularly in…

A: Mass of  Na₃³²PO₄ = 175 mg  Time of decay t = 54.6 days half life of P-32 = 14.3 days We need to…

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.