A piece of wood, reportedly from King Tut's tomb, was burned, and 7.32 g CO2 was collected. The total radioactivity in the CO2 was 10.8 dis/min. How old was the sample? Carbon from living materials decay at a rate of 15 disintegrations per minute per gram of carbon. The half life of carbon-14 is 5730 years. A. 8610 yrs B. 7440 yrs C. 6280 yrs D. 5544 yrs

Q: An animal skeleton has a carbon-14 decay rate of 11.1 disintegrations per minute per gram of carbon.…

A: given: carbon-14 has a half-life = 5730 yrs  carbon-14 decay rate = 11.1 disintegrations carbon-14…

Q: Carbon-14 has a half-life of 5730 yr. A living organism has an activity of 15.2 counts per minute…

A: The solution is as follows :

Q: A sample of cobalt-60 was labelled as having an activity of 3.25mCi, but upon inspection, it…

A: Co-60 is used medically for radiation therapy as implants and as an external source of radiation…

Q: . Suppose that an 85.0-g laboratory animal ingests 10.0 mg of a substance that contained 2.55% by…

A: Amount of Pu-239 ingested in animal = 2.55 % of 10 mg  Amount in mass =

Q: A patient receives 9.0 ng of a radioisotope with a halflife of 12 h. How much will remain in the…

A: Radioactive elements are those which undergoes the spontaneous reactions (may be fusion or fission)…

Q: A 116.8 ng sample of an unknown radioactive substance was placed in storage and its mass measured…

A: Given- Initial amount=116.8ng Final amount=14.60ng Time=47days

Q: You have a sample of unknown medication that is radioactive. You believe you should be able to…

A: Given: The initial activity, (A0) = 1.14×106 Bq. The activity after 11.1 hrs, (A) =  6.60×105 Bq.…

Q: Given the emissions and half-lives for the Th-232 series, determine the missing values in the…

A: #1: We are given an incomplete Th-232 series and we have to complete the missing species.

Q: Complete each nuclear fission reaction.

A:

Q: 25 grams of rock there are 3.43 grams of radioisotopes and 0.482 grams of nuclides derived from the…

A: Given: In 25 grams of rock, there are: 3.43 grams of radioisotopes. 0.482 grams of nuclides derived…

Q: Fluorine-18, which has a physical half-life of 110 min, is used in PET scans. if 1.00g of…

A: The fluorine-18 sample was shipped at 5:00 PM and arrives the laboratory at 9:30 AM in the next…

Q: Complete the table for the radioactive isotope. Isotope 239 Pu, Half Life (In years) 24100, Initial…

A: The amount of time required by an element to reduce to half its quantity is called its half-life.

Q: A 1.00 g sample of a radioactive isotope decays such that 0.675 g will remain after 5.43 yr.…

A: The initial amount of the sample The amount left at time t, [A] = 0.675 gTime (t) = 5.43 yearsHalf…

Q: Write a balanced equation for beta decay of indium-113. Express your answer as a nuclear equation.

A: Beta decay indicates beta particles are released during disintegration.

Q: A radioactive sample decays with a half-life of 71.19 minutes. If the original activity of the…

A:

Q: A mammoth skeleton has a carbon-14 decay rate of 0.48disintegrations per minute per gram of carbon…

A: Radioactive disintegration follows first order reaction and decay rate equation can expressed as,…

Q: The activity of radioactive carbon-14 decay in a piece of charcoal found at a volcanic site is 11.0…

A: Step 1. Determine decimal fraction of Carbon -14 remaining: 11.018.3=0.601   Step 2. Determine how…

Q: 92232U  ( Atomic Mass, 232.0371 u) decays by alpha emission. The atomic mass of 24He is 4.0026u. The…

A: Option A is the correct answer for this question

Q: A wood sample from an Egyptian tomb gave a C-14 activity per unit mass of 7.3 per min per g.…

A: we need to calculate the age of the wood sample in years.

Q: A 75-kg human is exposed to 32.8 rad of radiation. How much energy is absorbed by the person’s body?…

A: Given, A 75-kg human is exposed to 32.8 rad of radiationUnit conversion:1 Rad = 0.01 Joule/Kg100 Rad…

Q: If the half life of a radioactive isotope is 3 minutes, how much of an 8 Ci sample would remain…

A:

Q: 7. Californium-251 was synthesized at the University of California in 1950. At the time of sampling,…

A: Since you have posted a question with multiple sub-parts ,we will solve first three sub-parts for…

Q: [References) A rock containing 8 mg of plutonium-239 per kg of rock is found in a glacier. The…

A: Radioactive decay, also known as radioactive disintegration, is when an unstable nucleus loses its…

Q: 1.) A researcher claims that an ancient scroll originated from Greek scholars in about 500 B.C. Its…

A: “Since you have asked multiple question, we will solve the first question for you. If youwant any…

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: Carbon-14 has a half-life of 5730 yr. A living organism has an activity of 15.2 counts per minute…

A:

Q: Using activity to radiodate The half life for the decay of carbon-14 is 5.73 x 10 years. Suppose the…

A: The problem is asking us to find the age of an artifact using the concept of radioactive decay. The…

Q: Part 1 The half-lives of 235U and 23$U are 7.04 x 10° years and 4.47 x 10° years, respectively, and…

A:

Q: 3 Carbon-14 has a half life of about 5,730 years. If an archeologist examines a bone and finds 6.25%…

A: Given :  Half life of C-14 = 5730 years  % of C-14 = 6.25 %

Q: While in the upper peninsula, you have found an unusual fossil in a rock layer that you are really…

A:

Q: In each of the following radioactive decay processes, supply the missing particle. 206 a. At → 202…

A:

Q: If the initial sample is  1.25 g,  what mass of the original iridium‑192 remains after  65  days?…

A: Mass of sample =1.25 g Time, t = 65 days Mass remained = 0.675 g

Q: ty due to the radioactive decay of the carbon-14 in a tiny sample of an artifact made of wood from…

A: Answer: the half life carbon -14 is = 5.73 × 103 years.  Activity of the sample in initial( Ao)=…

Q: Carbon-14 has a half-life of 5730 yr. A living organism has an activity of 15.2 counts per minute…

A:

Q: rmine the type of nuclear transmutation shown by ach of ollowing reâctions: alpha decay, beta decay…

A:

Q: While exploring a coal mine, scientists found plant fossils which had been preserved by an…

A: Given: Amount of carbon-14 in fossil = 20 counts/min = Nf Amount of carbon-14 in living tissue = 160…

Q: Carbon-14 has a half-life of 5730 yr. A living organism has an activity of 15.2 counts per minute…

A:

Q: A sample from an archeological artifact contained 7.97 x 10-11 g of C-14. A similar sample from a…

A: The objective of the question is to determine the number of half-lives that have passed and the age…

Q: What is emitted in the nuclear transmutation? 27^Al(n,?)^24 Na a neutron a gamma photon a beta…

A: The above reaction notation shows nuclear transmutation . The target nucleus is Al , the bombarding…

Q: When 239 Pu is used in a nuclear reactor, one of the fission events that occurs is gy 239 in + 39 94…

A: Nuclear fission is a fundamental process in nuclear reactors, where heavy atomic nuclei, such as ,…

Q: Explain what is meant by the half-life of a radioactive nuclide. Living wood has an activity of 16…

A: A radioactive nuclide is an atom that has excess nuclear energy, making the atom unstable.…

Q: 9436Kr

A: Dear student I have given answer to your question in the image format.

Q: How many half-lives did a radio-active sample complete is 2.5 g of a sample remains from 20.0 g…

A: Half-life time: The time in which the concentration of the radioactive species decreases to half is…

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.