3. The half-life of a particular isotope of iodine is 8.0 days. How much of a 10.0-g sample of this isotope will remain after 30 days?
Q: The activity of a particular radioactive nuclide falls from 1 × 1011 Bq to 2 × 1010 Bq in 10 hours.…
A: Calculate the decay constant of the radioactive nuclei. A=A0e-λt2×1010 Bq=1×1011 Bq×e-λ×10 he-λ×10…
Q: 9. Iodine 131 I is used in diagnostic and therapeutic techniques in the treatment of thyroid…
A: Given value--- half life time = 8.04 days. We have to find--- What percentage of an initial…
Q: The radioactive isotope (1Os) has a half-life of 22.1 hours. How much of 49.5 g of this isotope will…
A: If initial quantity is N0 and after t time the quantity is N then…
Q: A radioactive sample with a half-life of five hours. Calculate the radioactive efficiency after…
A: Given Half life of radioactive sample t12 = 5 hour
Q: 5. A tree falls in a forest. How many years must pass before the carbon-14 mass in the tree's carbon…
A: Percentage mass of carbon-14 remaining (m)=3.125% Half life of carbon014 (T)=5570 years
Q: One useful radioisotope useful for dating the age of certain archaeological items is Carbon-14.…
A: Given : t12= 5730 years t= 17190 years No. of half lives =…
Q: Atree falls in a forest. How many years must pass before the carbon-14 mass in the tree’s carbon…
A: Suppose the carbon-14 mass in tree = n0 After few years the carbon-14 mass = n = 3.125100n0…
Q: The half-life of 38 Sr is 28 years. What is the disintegration rate of 15 mg of this isotope?
A: The rate of disintegration of a radioactive substance is the number of atoms present at that time.…
Q: 15. In a sample of naturally occurring Uranium, such as from a mine, most of it is the isotope…
A: In the question, the sample has Uranium isotopes In this sample Uranium -238 has the highest…
Q: a. What is the final product of U-235? b. What are the 10 intermediate nuclides?
A: When a particle undergoes alpha decay it produces an alpha particle. e.g: When a particle undergoes…
Q: 3. Which of these nuclides do you expect to be radioactive? Explain your reasoning. a. 20 Ne b.…
A:
Q: After 32 days, only 1/16 of a radioactive sample remains. What is the half-life of this sample?…
A:
Q: Iron-58 and bismuth-209 fuse into a large nucleus plus a neutron. Write the reaction equation and…
A:
Q: 8. Estimate how long for the amount of Strontium-90 on the Earth's surface to reach 1% of its…
A:
Q: What is "half-life"? Select one: a. The time needed for half of the radioactive atoms in a sample to…
A: Half-life is the duration of time needed for decay of the half of the radioactive atoms in a given…
Q: 1. The half-life of cobalt-60 is 5.3 years. If 4.0g of cobalt-60 are allowed to decay for 21.2…
A: Given Half life t12 = 5.3 years, Initial amount N0 = 4 gram 1(a) now from formula N =…
Q: a. A radioactive sample with a half-life of five hours. Calculate the radioactive efficiency after…
A: Concept used: Radioactive decay follows exponential decay law. Decay constant can be calculated…
Q: A human skeleton found at an archeological site is found to have on 1/10 the amount of Carbon-14 one…
A: Given, N= 1/10=0.1 No= 1 T= 5730years We know that, N= No(1/2)t/T
Q: A beta particle is A.a form of highly penetrating radiation . B.an electron emitted by a larger…
A: The transformation of a neutron into a proton and an electron (followed by the emission of the…
Q: If a 10-gram sample of a radioactive substance has a half-life of 6000 years, how much would be…
A: We are authorized to answer one question at a time, since you have not mentioned which question you…
Q: 18. A banana contains the naturally occurring radioactive isotope potassium K-40 which undergoes…
A: Step 1: Potassium-40 (40K) undergoes beta minus (β−) decay to form calcium-20 (20Ca). In beta minus…
Q: 131 8. Iodine I is used in diagnostic and therapeutic techniques in the treatment of thyroid…
A:
Q: 1. (Q14)/(P16) How is Carbon - 14 used to determine the ages of wood, bones and other artifacts. If…
A: Note : As you have posted multiple questions, according to bartleby guidelines we are opted to solve…
Q: 5. A radioactive material has a half-life of eight days. How long will it take the material to be…
A: Let initial number of nuclei in the radioactive material be No and it is given that half life of the…
Q: . The decay constant of lodine-123 is 1.34 x 10-5 s-1. What is its half-life and how long will it…
A:
Q: The half life period of radioactive element same as the mean life time of another radioac element y.…
A:
Q: The isotope cesium (Cs)-137 has a half-life of 30 years. How long will it take for this isotope to…
A:
Q: The radioactive isotope 3° Ra has a half life of 1599 years. After 1000 years there is 3.5 grams of…
A: Radioactive Decay Law The rate of decrease in the number of radioactive nuclei is directly…
Q: A sample of a radioactive isotope is placed near a Geiger counter, which is observed to register 160…
A:
Q: Why are some radioactive substances dangerous for a very long time? Select one: a. Some radioactive…
A: Elements such radium and uranium have very large half-lives of order of 1000 years and billion years…
Q: 7. Cobalt-60 has many medical applications. If the half-life of cobalt-60 is 5.25 years, how long…
A: Half life ( T ) = 5.25 years Initial amount of sample = No Final amount of sample ( N ) = No / 3
Q: 99. Multiple Choice: The half-life of an isotope of an element is 5 days. The mass of a 10 gram…
A:
Q: 6. The half-life of a radioactive substance is 20 minutes. If we start with 980 g, find the mass…
A: Given, Half time, t0.5 = 20 min Initial amount, No = 980g Then decay constant λ will be, If N is…
Q: radioactive isotope decays by - emission with a half-life of 1.0 min. During the first 1.0 min, a…
A:
Q: A certain radioactive isotope decays to one sixteenth of its original amount in 4.0 hours. What is…
A:
Trending now
This is a popular solution!
Step by step
Solved in 2 steps