12) The charcoal from ashes found in a cave gave 7.4 14C counts per gram per minute. Wood from the outer portion of a growing tree gives a comparable count of 15.3. The half-life of 14C is 5700 years. How old are the ashes? А) 3245 y В) 5700 y C) 5970 y D) 9220 y E) 5437 y

Q: 9. Suppose the amount of a certain radioactive substance in a sample decays from 3.80 mg to 1.70 mg…

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

Q: [Review Toplcs] [References) Use the References to access important values if needed for this…

A: Carbon Dating of a Sample  using the data from question and solution is present in step-2

Q: What is the half-life of the bizarre isotope Toddium - 419 (it is a makeup element) if after 4.00…

A: Time period, t = 4.00 weeks Initial amount, [A]o =950.0 g Final amount, [A] = 29.6875 g Calculation…

Q: An Egyptian papyrus is discovered and it is found that the ratio of 14C to 12C is 65% of the known…

A:

Q: 6C has a half life of 5,730 years. How many 6C atoms would you need in order to measure an average…

A: The half life is given as 5730 years Average Decay per Second = 10

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

A: Given-> Half life = 78.2 hours Initial amount = 44.2 mg Time = 97.0 hours

Q: tled Section 46. The carbon-14 content of an ancient piece of wood was found to be one- sixteenth of…

A: we know Radioactive decay constant (K)= 0.693t1/2Given ,t1/2 = 5730 yearNow ,  K= 0.6935730…

Q: 11C is a radioactive isotope of carbon used for, among other things, nuclear medicine (PET scans,…

A: Given,  Mass of carbon-11 in 11C - labeled material = 1.0 g.  Half life of 11C = 20. min.  The 11C…

Q: Prove that t½ = t ln (2)/ln(No/Nt) determines the half-life of a 30-g sample of  Pu-239 which is…

A:

Q: Barium−131 is a radioisotope used to study bone formation. A patient ingested barium−131. How much…

A: The time in which half of the initial amount of the reactants convert into the product known as half…

Q: What is the age of a fossil that has a carbon-14 decay rate of 6.5 disintegrations per minute per g…

A: Formula used y=a e-nt where y is the final  amount of death = 6.5dis/min           x is the initial…

Q: In 1954 researchers found an ancient Egyptian ship that was buried near the Pyramids approximately…

A: Given The half-life period for 14C = 5730 y = 1.8 x 1011 sec. Molar mass of 14C = 14 g/mol NA =…

Q: Suppose the amount of a certain radioactive substance in a sample decays from 6.70 mg to 700. µg…

A:

Q: Suppose the amount of a certain radioactive substance in a sample decays from 1.60 mg to 900. µg…

A:

Q: Carbon 14 decays to carbon12. The half-life of the C14 isotope is 5730 years. 3000 years after an…

A:

Q: A skull believed to belong to an ancient human being has a carbon-14 decay rate of 6.50 dis/min.g of…

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

Q: Normal No Spacing Head 三三。 Paragraph Styles 22. A normal adult jawbone contains 200 mg of Carbon-14…

A:

Q: 19. The half-life of the radio-isotope iodine - 131 is 8 days. What fraction of the original iodine…

A: Half life of the reaction is the time in which the reactant becomes half of the initial reactant. It…

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: Suppose the amount of a certain radioactive substance in a sample decays from 7.10 mg to 5.20 mg…

A: Radioactive decays are first order reactions. Since we know that the relationship between the amount…

Q: 1. Substance Q initially weighs 56 grams. After 6 minutes, it was observed that its mass decreased…

A:

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

A:

Q: A 1.55 g sample of an isotope has a half-life of 3.8 days. What mass of sample is left after 5.5…

A: Given that,Initial amount of sample = 1.55gHalf life time = 3.8 daysTime = 5.5 days

Q: Define the term half-life as used in radioactivity. The half-life of carbon-14 is 5730 years. If the…

A: Half life in Radioactivity : It is the time required by a radioactive nuclei to decay to exactly…

Q: Suppose 62.0% of a sample of radioactive polonium-218 remains after 2.14 minutes.  Estimate the…

A: The half life of Po-218 has to be determined. Given data contains, Time taken is 2.14 minutes.…

Q: Suppose the amount of a certain radioactive substance in a sample decays from 6.50 mg to 2.40 mg…

A: Radioactive decay is a first-order reaction. On applying the value for rate constant k, we find it…

Q: In living organisms, C-14 atoms disintegrate at a rate of 15.3 atoms per minute per gram of carbon.…

A: Answer is explained below. Given that, in living organisms C-14 atoms disintigrate at a rate of 15.3…

Q: At 7:00 AM a hospital uses its cyclotron to make 1.00 milligram of the isotope F-18 for use as a…

A: “Since there are multiple questions and it is not mentioned that which one has to be solved so I am…

Q: he half-life of 14/6 C is 5730 years. If a mummy wrapping contains about 1/2 as much 14/6 C as…

A:

Q: An archaeologist finds some ancient jewelry made from bone. The jewelry has a carbon mass of 482 g…

A: Nuclear decay follows 1st order reaction.  Given the half-life of C-14, t1/2 = 5730 year…

Q: barium -131 is a radioisotope used to study bone formation. a patient ingested barium -133. how much…

A:

Q: chemist determines that a sample of petrified wood has a decay rate of 6.00 counts/minute-gram. What…

A:

Q: Bromine-88 is radioactive and has a half life of 16.3 seconds. What percentage of a sample would be…

A: Given,Half-life of Bromine-88 = 16.3 seconds.Percentage of sample left after 74.8 seconds has to be…

Q: Gold-198 is used in the diagnosis of liver problems. The half-life of 198Au is 2.69 days. If you…

A: Given,  Half-life of Au = t1/2 = 2.69 days  Initial concentration = N0 = 2.8 mg  Time period = t =…

Q: How many half-lives does it take a 10.0 gram sample of 12353I to drop to 0.625 grams? What length…

A: The time has to be calculated

Q: Strontium-90 is produced during the nuclear fission of uranium-235 and is part of nuclear fallout…

A:

Q: A 53.8-mg sample of sodium perchlorate contains radioactive chlorine-36 (whose atomic mass is 36.0…

A: radioactive nuclie undergo sponteneous decay reaction to produce stable products. The time for the…

Q: 5. A tree falls in a forest. How many years must pass before the carbon-14 mass in the tree's carbon…

A: Suppose Initial amount = Ao Amount at time, t = 3.125% Ao  Half-life, t1/2 = 5570 years

Q: 1. Gold-198 is used in the diagnose of liver problems. The half-life of Au is 2.69 day. If you begin…

A: Given data: half life of 198Au = 2.69 day Initial concentration of  198Au is 2.8 μg Time = 10.8 day

Q: Carbon-14 is used in radiocarbon dating. The half-life of carbon-14 is 5.73*10^3 years. How many…

A:

Q: Radiocarbon dating techniques are used to determine that a very old piece of bone emits emits about…

A:

Q: 1) P-32 has a half-life of 14.3 days. How many milligrams of phosphorus-32 remain after 57.2 days if…

A: Half-life = 14.3days Initial mass = 4.0mg You will be left with half of initial mass after 14.3 days…

Q: 8.0mg of a radioisotope of half-life 30 minutes is used for 12 minutes. What is the amount of the…

A:

Q: Carbon-14 (14C) is a naturally occurring radionuclide of carbon with about 5,730 years half-life. If…

A:

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.