B. A sample of wood from a Thracian chariot found in an excavation in Bulgaria has a 14C activity of 11.2 disintegrations per minute per gram. Estimate the age of the chariot and the year it was made. (t12 for 14C is 5.73x10 years, and the activity of "C in living material is 15.3 disintegrations per minute per gram.)

Q: 50. Selenium-82 undergoes double beta decay: Se - Kr + 2 je¯ + 27 This low-probability process…

A: Here, the radioactive decay are first order reaction for which, rate constant (k) is related with…

Q: A 241 mg sample of carbon from a piece of cloth excavated from an ancient tomb in Nubia undergoes…

A:

Q: 3) A wooden spear shows "C activity of 92 disintegrations/hr. A living tree has a "C activity of 150…

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Q: A sample of wood from an Egyptian mummy case has a specific activity of 9.41 d/min-g. How old is the…

A: Solution: We know that --- for a sample of wood from an Egyptian mummy which is related to…

Q: If the amount of radioactive phosphorus-32 in a sample decreases from 2.4 mg to 0.30 mg in 42.9…

A:

Q: The carbon-14 activity in papyrus growing along the Nile River today is 231 decay events per…

A: Given data,Initial activity of C-14=231 decay events/KgFinal activity of C-14=140 decay…

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: What is the specific activity (in Ci/g) if 2.6 g of an isotope emits 4.13X10⁶ β⁻ particles per hour?

A: Curie(Ci) -is number of disintegration per second in 1g of radium-226 1Ci=3.70*1010dps

Q: Krypton-87 has rate constant of 1.5 x 10 -4 / s. What is the activity of a 2.0 mg sample?

A: Welcome to bartleby ! Introduction : We have to calculate activity of sample

Q: How much time is required for a 6.25-mg sample of 51Cr to decay to 0.75 mg if it has a half-life of…

A: The initial amount of the sample = 6.25 mg The amount of sample after time t = 0.75 mg. The…

Q: In a treatment that decreases pain and reduces inflammation of the lining of the knee joint, a…

A: Initial count (No) = 1100 per second Final count (Nt) = 1.14 per second Time (t) = 24 hours

Q: A sample of rock was found to contain 8.23 mg of rubidium-87 and 0.47 mg of strontium-87.(a)…

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Q: A sample of gas from a basement containing radon-222 has an activity of 7 pCi/L, which is above the…

A:

Q: 3.8. The half-life of 109Tc, a ß- emitter, is 15.8 s. a). How many atoms of 10Tc are present in a…

A:

Q: 7. The age of an ancient tree trunk is estimated using radiocarbon dating. If the tree gives 3.75…

A:

Q: Phosporous-32 half-life is 14.3 days. A vial containing 10ug of P-32 is accidentally spilled into a…

A:

Q: Samples recovered from an archaeological site are determined to have a 14C activity of 1.3 dpm/g.…

A: Given:   The activity of C-14 from recovered sample is 1.3 dpm/g. The activity of C-14 in living…

Q: A sample of uranium ore contains 5.37 mg of U-238 and 2.52 mg of Pb-206. (a) Calculate the…

A: Given mass of U-238 = 0.00537 g Number of moles of U-238 = 0.00537/238 = 2.26 × 10-5 mol Given mass…

Q: Plutonium-239 (t12 = 2.41 × 10* yr) represents a serious nuclear waste hazard. If seven half-lives…

A: Given  Number of Half lives  ( n ) = 7  Half life time  ( t1/2 )    = 2.41 × 104  year  Time ( t )…

Q: Iodine-131, in a sodium iodide tablet, is used to measure the activity of the thyroid gland. If a…

A: Nuclear chemistry is a branch of chemistry which involved the study of reactions in the nucleus. The…

Q: The following items detail a decay chain from radioactive Uranium-235 to stable Lead-207. What is…

A: Applying concept of radioactive decay.

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: The half-life of 19TC, a ߯ emitter, is 15.8 s. 43 (a) How many atoms of 13Tc are present in a…

A:

Q: NUCLEAR REACTIONS Nickel-56 decays with a half-life of 6.075 days. 1. Write the balanced nuclear…

A:

Q: If the half-life of Xe-133 is 5.2 h, what will be the activity of the initially 20.-mCi sample after…

A:

Q: A wooden artifact from an Indian temple has a 14C activity of 42 counts per minute as compared with…

A: The question is based on concept of radioactive decay. we have to calculate the age of the wooden…

Q: World War II aircraft had instruments with glowing radium-painted dials. The activity of one such…

A: Given , Activity =2.0×105 Bq

Q: 5. A sample of wood from a Thracian chariot found in an excavation in Bulgaria has C-14 activity of…

A:

Q: An earthquake in the area of present-day San Francisco isto be dated by measuring the 14C activity…

A:

Q: 100 43 3. The half-life of TC, a B emitter, is 15.8 s. (a) How many atoms of 43TC are present in a…

A: An isotope exhibits radioactivity or emits radioactive particles, when the nucleus of the isotope is…

Q: Some mammoth bones found in Arizona were found by carbon-14 dating to be 1.13x104 years old. What…

A: Given: Original activity = 15.3 disintegrations per minute per gram. Age of bones = 1.13 × 104…

Q: some mammoth bones found in Arizona were found by Carbon-14 dating to be 1.113 x 1014 years old.…

A: We have The half-life of C14 is 5730 years t12=0.693k.......1 By rearranging the equation 1, we get…

Q: Cobalt-60 is used extensively in medicine as a source of g-rays. Its half-life is 3.97 years. How…

A: Given: Half-life of Co-60 = 3.97 years = 3.97 × 365 = 1449.05 days…

Q: 10. The 14C content of an ancient piece of wood was found to be one-sixteenth of that in living…

A: The question is based on the concept of carbon dating. We have been given the fraction of carbon…

Q: A sample of wood from a Thracian chariot found in an excavation in Bulgaria has a 14^ C activity of…

A: A numerical problem based on age of element, which is to be accomplished.

Q: A tiny piece of paper (produced from formerly living plant matter) taken from the Dead Sea Scrolls…

A: Radioactive disintegration follows first order kinetics. Hence, the rate of decay can be followed by…

Q: Gold-198, a β-emitter used to test leukemia, has a half-life of 2.695 days. The standard dosage is…

A:

Q: a. Write the β- decay reaction.  b. What is the initial number of Cs-137 atoms in the sample?   c.…

A: Nuclear kinetics follows first order kinetics and all formulas of first order reaction is applicable…

Q: One of the nuclides in spent nuclear fuel is UU-235, an alpha emitter with a half-life of 703…

A: The half-life of U-235 is = 703 million years The time to reach the amount of U-235 to 1/4 of its…

Q: IUCLEAR REACTIONS Zinc-62 decays with a half-life of 9.186 hours. 1. Write the balanced nuclear…

A:

Q: The half-life of 199Tc, a ߯ emitter, is 15.8 s. (a) How many atoms of 199Tc are present in a sample…

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Q: The radioactive isotope 212Pb has a half-life of 10.64 h. A sample containing this isotope has an…

A:

Q: Krypton-87 has  a rate constant of 1.5 * 10-4 s-1. What is the activity of a 2.00 mg sample?

A: The activity of a sample of radioactive matter is defined by the number of disintegrations taking…

Q: A piece of cloth is discovered in a burial pit in Benguet, Philippines. A tiny sample of the cloth…

A: Radioactive decay follows first order kinetics.  We know that : t = (1/k)*ln(a0/at) ...(1)  (a0/at)…

Q: 14.20 60Co is used extensively in medicine as a source of y-rays. Its half-life is 5.27 years. (a)…

A:

Q: A sample of wooden artifact is found to undergo 8 HC disintegrations per minute per gram of carbon.…

A: