14.25 A wooden artifact is burned and found to contain 21 g of carbon. The ¹4C activity of the sample is 105 disintegra- tions/min. What is the age of the artifact?

Q: Uranium -238 decays in a series of steps to Pb-206. When the material is very old, one can treat the…

A: Radioactive decay follows 1st order reaction.  Given the half-life, t1/2 = 4.50*109 yr

Q: A human bone uncovered in a burial site in Majorca, Spain by a student working for the pollentia…

A: percentage amount of C- 14 = 5.55% Age Of Human remain = to be calculated

Q: A dinosaur remain has a C-14 isotope and has a half-life of 5,715 years. The activity of this is…

A:

Q: 29) a rock from the moon was found to contain 1.0 x 10* g (A,) of uranium-238 and 4.0 x 10“ g…

A: The half-life of a radioactive isotope (t1/2 ): All radioactive decay first-order reaction kinetics.…

Q: Use your knowledge obtained while studying nuclear reactions to explain how the rate of decay of a…

A: The half-life of the given radioactive reaction is the time at which the reactant is disintegrated…

Q: The age of a fossil with 87% of the original radioactive C-14 (k=1.2x10-4 yr-1) is   37,000 yr…

A: Given data,k=1.2×10-4yr-1Let the initial concentration be 100therefore,Final concentration=87

Q: 30% of a radioactive substance has decayed after 10years, what is its half-life?

A:

Q: A sample of rock was found to contain 8.3 mg potassium-41 and 0.48 mg of cacium-41. Calculate the…

A: GivenHalf Life of potassium = 4.1×10^10 yrsSample of rock contains 8.3mg of potassium+ 0.48mg of…

Q: A wooden artifact is burned and found to contain 21 g of carbon. The 14C activity of the sample is…

A: Radio carbon dating is a technique used to determine the age of the wooden artefact or…

Q: A wooden artifact is burned and found to contain 21 g of carbon. The 14C activity of the sample is…

A: Given,  Mass of wooden artifact is = 21 g. The activity of the sample is = 152 dis/min. t1/2 for…

Q: Uranium-235 decays to Lead-207 with a half life of about 704 million. years. if you find a 1000g…

A: Half life of Uranium-235t12 = 704 million years Initial amount of fossilNo= 1000 gms Final amount of…

Q: On an archeological dig, a wooden canoe is unearthed and analyzed for carbon-14. About 25% of the…

A: Radioactive decay follows first-order kinetics. The half-life of the first-order reaction does not…

Q: What radionuclide technique can be used to estimate the age of fossils up to 50,000 years old?

A: Radionuclide: It is also known as Radioactive nuclide, radioactive isotopes. These are the atoms…

Q: A shell fossil that originally contained 100 mg of carbon-14 non contains 75 mg of the isotope.…

A: Initial amount, [A]0 = 100 mg  Final amount, [A] = 75 mg  Half-life, t1/2 = 5570 years

Q: A wooden artifact is found in an ancient tomb. Its carbon-14   activity is measured to be 61.0% of…

A: Activity of carbon-14 = 0.61 R/Ro = 0.61 We will use the below equation for decay process- R=…

Q: If 10% of a radioactive substance decomposes in 200 years, what percentage will be present at the…

A: Given is the amount decomposed after 200 years and we have to find after 1000 and 2000 years.

Q: After 119 days have elapsed, 1/12 of a radioisotope sample remains undecayed. What is the half-life…

A: Amount of radioisotopes remaining = 112 of the initial amount Number of days taken for the decay =…

Q: A small figure carved from wood, believed to predate the period of Roman occupation of the Middle…

A:

Q: Enter your answer in the provided box. A rock sample originally contains 3.32 mg of 43°U. How much…

A:

Q: If 29.5% of the original amount of 14C is present in a wooden tool at the time of analysis, what is…

A: Since the carbon decay is a first order kinetics reaction Hence for the first order reaction we can…

Q: Suppose the activity due to the radioactive decay of the carbon-14 in a tiny sample of an artifact…

A: Half life for decay of C-14 (t1/2) = 5.73 × 103 years  Activity due to decay in archaeological…

Q: Find the activity of a sample containing 1.51 x 10-6 g of  6027(Co) (T1/2 = 5.27 years).

A:

Q: Nickel-63

A: Given, Half life = 92.0 yr Initial moles = 1.250  Time t = ?

Q: A tree sample was uprooted and buried 60,000 years ago during part of the Wisconsin glaciation. The…

A:

Q: The half life for the decay of carbon-14 is 5.73 x 1 × 10³ years. Suppose the activity due to the…

A:

Q: carbon as a piece of modern charcoal. How long ago was the tree burned to make the ancient charcoal?…

A:

Q: Consider 1 mole (238 gm) of isotopically pure uranium U-238. Calculate its activity for the next 1…

A: Given: The molar mass of uranium = 238 g/mol. The given mass of uranium = 238 g. The number of moles…

Q: The half life of 52Fe is 8.28 hours. Suppose we measure the activity of a sample containing 52Fe and…

A: Calculation of disintegration constant (λ):T1/2 of 52Fe is = 8.28 hours.

Q: A radioactive material is sampled from a site of leakage. In 2020, the amount of radioactive…

A: Given that, in 2020, the amount of radioactive material left is Ct = 92 mg. Also, given that in…

Q: Based on Plutonium's half-life, why is it so hard to dispose of?

A: According to research,  Plutonium has two isotopes, Pu-239 and Pu-241.  Here, Plutonium-239 has a…

Q: A sample initially contains 60.0g of thorium-234. After 48 days 7.8g of thorium-234 remains…

A: The half lifetime t12of a radioactive compound is the time when it disintegrates to its half of the…

Q: A medical technician is working with the four samples of radionuclides listed in the table below.…

A: Answer..

Q: A tiny sample of a fabric is burned to CO2, and the 14C/12C ratio is 0.350 times the ratio in…

A:

Q: A wooden object from an archeological site is subjected to radiocarbon dating. The activity due to…

A: To determine the age of the archaeological sample, we can use the formula for radioactive decay:

Q: A tiny sample of a fabric is burned to CO2, and the 14C/12C ratio is 0.350 times the ratio in…

A:

Q: A medical technician is working with the four samples of radionuclides listed in the table below.…

A: we need to determine the order of radioactivity and the time for the radioactive nuclei to decrease…

Q: A wooden artifact is burned and found to contain 21g of carbon. the 14c activity of the sample is…

A: The half-life of a reaction is the time taken for the reactant to reduce to half its initial value…

Q: After 19 days have elapsed, 1/21 of a radioisotope sample remains undecayed. What is the half-life…

A:

Q: A 1.800 gram sample of carbon taken from an artifact found in cave has a carbon-14 activity of 10.80…

A: Sample of carbon wt = 1.800 gmThe sample of carbon has activity =10.8 decays/min.The activity of…

Q: Use the following values: mass of neutron = 1.008665 amu mass of proton = 1.00728 amu mass of…

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

Q: How many atoms of I-131 would be left in Mr. Miller's body after 60 days?

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.