Charcoal samples from Stonehenge in England were burned in O2, and the resultant CO2 gas bubbled into a solution of Ca1OH22 (limewater), resulting in the precipitation of CaCO3. The CaCO3 was removed by filtration and dried. A 788-mg sample of the CaCO3 had a radioactivity of 1.5 * 10-2 Bq due to carbon-14. By comparison, living organisms undergo 15.3 disintegrations per minute per gram of carbon. Using the half-life of carbon-14, 5700 yr, calculate the age of the charcoal sample.

Q: Present-day plant life has a carbon-14 decay rate of 16 disintegrations per minute (dpm) per gram of…

A:

Q: unearth a treasure chest (you have such good luck!). Inside the chest is a beautiful clay vase.…

A: Given: Initial concentration of [C14]0=10-10 % Final concentration of   [C14]0=10-13 % Half life…

Q: A 3.6-kg laboratory animal receives a single dose of 8.92x10-4 Gy. (a) How many rads did the animal…

A: (a) Given data contains, Mass of laboratory animal is 3.6-kg. Dose received is 8.92x10-4 Gy.

Q: # 4. The remnants of an ancient fire in a cave in Africa showed a 614decay rate of 3.9counts per…

A: Radioactive decay is a first order reaction. The integrated rate law for first order reaction is as…

Q: A discovery revealed a parchment fragment that had about 64% as much 14C radioactivity as does plant…

A: Answer: This question is based on the radioactive decay and all the radioactive decay reactions are…

Q: Give the missing product or reactant in the following nuclear reactions. Determine the type of…

A:

Q: Uranium-lead (U-Pb) dating of geological samples is one of the oldest and most refined radiometric…

A:

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

A: Given, initial mass of sample = 10.5 g final mass of the sample = 0.171 g time required to decrease…

Q: A 3.6-kg laboratory animal receives a single dose of 8.92×10-4 Gy. (a) How many rads did the animal…

A: (a) Given data contains, Mass of laboratory animal is 3.6-kg. Dose received is 8.92x10-4 Gy.

Q: A patient undergoing thyroid radiotracing was initially administered with 50.0 mg of iodine-131.…

A:

Q: Identify the unknown particle X in the following nuclear reaction equations. (Enter your answers in…

A:

Q: Potassium-argon dating is used to measure the age of rocks formed from cooled lava by determining…

A: Given, Potassium-40 decays into 40Ca ( 89.1 % of the time ) and 40Ar ( 10.9 % of the time )  Half…

Q: 3 A twig from a bristlecone pine tree is found in a sedimentary layer, and its age is to be…

A:

Q: Explain how you might use radioactive Fe-59 (a beta emitter with t 1/2= 44.5 days) to determine the…

A: Given: Half life of Fe-59 = 44.5 days let the initial amount of Fe-59 be 100 mg. Final amount of…

Q: While touring pressurized water reactors, visitors are often granted access to the steam turbine…

A: In pressurized water reactors the heat transfer from core to turbines takes place in two different…

Q: Approximately how many half-lives must pass for the amount of radioactivity in a substance to…

A: Given, radioactivity of the substance decreases below 1% of its initial level.The initial percentage…

Q: Fluorine-18, which has a half-life of 110 min, is used in PET scans.  If 100. mg of fluorine-18 is…

A: Reaction in which rate is linearly depend upon one reactant is known as first order reaction.

Q: A sample of wooden artifact is found to undergo 9.0 6C 1? disintegrations per minute per gram of…

A: Given: The activity of wood sample = 9.0 disintegrations per min. The activity of fresh wood = 15…

Q: (c) ** C"C+ H 12 13 (d) x+F-0+He 18 15 F 6. 2.

A:

Q: Table III-C. Type of Radioactive Decay for Some Radioisotopes Unstable Isotope Prediction Confirmed…

A: Nuclear chemistry. Radio active disintigration.

Q: A living plant contains approximately the same fraction of carbon-14 as in atmospheric carbon…

A:

Q: The carbon-14 decay rate of a sample obtained from a young tree is 0.260 disintegration per second…

A: Initial activity = 0.260 dpspg Final activity = 0.181 dpspg Half life = 5715 year

Q: The carbon-14 decay rate of a sample obtained from a young tree is 0.263 disintegration per second…

A: Solution - According to the question - Given - Ao = initial activity = 0.263dps A = activity at time…

Q: 11) The decay curve shown below approximates the decay of carbon-14. What is the approximate…

A: Half life of any reaction is defined as the time required for the reactant to reduce to 50% of its…

Q: Archaeologists used pieces of burned wood, or charcoal, found at the site to date prehistoric…

A: 5730 Given, half-life of C-14 = years. 65.1% of C-14 found in living trees of the same type had…

Q: The Institute of Energy and Nuclear Research (IPEN) is the research unit of the MCTI responsible for…

A: Given , Initial Activity of tracer produced,CA0 = 115 mCi Time, t = 15 hr Activity of trcaer when…

Q: If 180. mg of fluorine-18 is shipped at 8:00 A.M., how many milligrams of the radioisotope are still…

A: Given information: Initial concentration of fluorine-18 is 180 mg. Half-life is 109.7 min The rate…

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

A: Answer is as follows

Q: The radioactive nuclide 235 U decays with at1/2 of 703.8 million years. Calculations reveal that…

A:

Q: 13) The half-life of C-14 is 5730 years and the decay is 1 order. If you start with 500 mg if this…

A: Hello. Since your question has multiple parts, we will solve the first question for you. If you want…

Q: Show that you can calculate the radioactivity of a sample from the relations r = r0e-λt and r =…

A: When a radioactive material undergoes decay, the number of nuclei undergoing the decay, per unit…

Q: Consider the I-131 nucleus that is used to treat thyroid. Mass of I-131 is 130.78302 amu. 1) what is…

A: To answer questions regarding I-131 nucleus.

Q: 225 Ac 9.9 d 221Fr de days 4.8 m h hours meminutes Sseconds ms milliseconds usmicroseconds X1 32 ms…

A:

Q: For a radioisotope where k=1.7x10-4yr1, how old is a sample when only 10% remains? O 5,900 years 590…

A: The radioactive compound emits continuously α, β, and γ particles and converted to a stable nucleus.…

Q: On April 26, 1986, an explosion at the nuclear power plant at Chernobyl Ukraine, released the…

A:

Q: The hydride of an unstable nuclide of a Group IIA metal, MH2 , decays by α-emission. A 0.025 mol…

A:

Q: Radium-226 (atomic mass - 226.03), the only naturally occurring isotope of this element, follows the…

A: Since the half-life of the 2nd and 3rd decay are very small in comparison to the 1st one, the 2nd…

Q: Vhat is the half-life of a radioisotop

A:

Q: If pure polonium-210 (k = 5.02 x 10-3 day-1) were used in a crime, based on radioactiv…

A: We know radioactive disintegration is first order kinetics. Again we know , for first order reaction…

Q: Complete the following nuclear reactions. 1. -> +ie + 38T. 22 102 Ru 44 EaSITY CHEMIST 3. TH E → 3 n…

A:

Q: Fluorine-18, which has a half-life of 110 minutes, is used in PET scans. If 100 mg. of fluorine-18…

A: Interpretation -  To determine the miligram of the radioisotope when Fluorine-18, which has a…

Q: radioactive sample contains 9.5 x 1017 atoms of a nuclide that decays at a rate of 5.4 x 1013…

A: We have to find half -life of nuclide

Q: Complete the following radioactive decay formulas. (Enter the missing reactant or product. Enter…

A: Complete the following radioactive decay formula ---

Q: Phosphorus-32 (3215P) decays by beta emission and it has a half-life of 14.3 days. Determine the…

A: Answer - The correct option is (A) 5.2 x 104 Ci

Q: You take a course in archacology that includes field work. An ancient wooden totem pole is excavated…

A: The above question can be solved using the formula  t1/2 = 0.693/k Where k is the rate constant k=…

Q: The carbon-14 activity of some ancient Indian corn was found to be 2.0 disintegrations per minute…

A: dpm is known as disintegration per minute. The half-life of the chemical reaction is the time…

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.