A living tree contains 14C (half-life, 5730 years) and has a specific activity of 750 counts per hour. A wooden artifact recovered from an archeological site gives a count of 190 counts per hour. The age of this artifact is most nearly

Q: The half-ife for a particular radioisotope cannot be determined directly from the rate constant for…

A: The given statement is false .

Q: The 14C radioactivity in a sample of fabric claimed to be from an archaeological site is measured as…

A: The objective of this question is to determine the age of a fabric sample from an archaeological…

Q: O 137 yrs O 173 yrs O 371 yrs O 317 yrs

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Q: The carbon-14 activity of some ancient Peruvian corn was found to be 10 disintegrations per minute…

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Q: The remains of an ancient cave were unearthed. Analysis from charcoal in the cave gave 12.0…

A: Radioactive decay is the process where the unstable nuclei break down into stable ones by emitting…

Q: 1. A 20 mg sample of a pesticide has a half-life to 25 years. How long would it take to reduce the…

A:

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: 1. A sample of a funeral shroud taken from an ancient Egyptian tomb is found to have C-14 activity…

A: Carbon-14, or C-14, is a type of carbon found in living things. When a living organism dies, the…

Q: If you have a sample of radioactive material that weighs 2 grams, and only 1 gram is left that is…

A: Initial nuclei = 2 grams. Reduced nuclei = 1 grams. Time = 5 years. Half life time of material = ?

Q: Which statement accurately summarizes why radiocarbon dating could be used for some samples but not…

A: Radiocarbon dating could be used for some samples but not others beacuse of:

Q: 1. A lab tech prepares 50.0 mg of I-123 on Tuesday, how many mg will remain 39 hours later if the…

A:

Q: Sodium-24 is used to treat leukemia and has a half-life of 15 hours. A patient was injected with a…

A: Radioactive disintegration  is very unstable nucleus loosing energy  and it follows first order

Q: A substance has a half-life of two days.  If 10 days have passed, how many half-lives has the…

A: Half life means the time in which amount of substance become half of its initial value

Q: about how much would have been left after three half-lives? A parent isotope has a half-life of 500…

A: Note : As per guidelines we can answer only the first question   The time it takes for the…

Q: Carbon-14 has a half-life of 5730 years, how old is a dress that was found to have a specific…

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Q: Fluorine-18, which has a half-life of 110 minmin, is used in PET scans. 1) If 105. mgmg of…

A:

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

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Q: 2. Create a graph that shows what mass of fermium-252 remains after each of its first five…

A: How much of the original isotope remains after a certain interval of time can be calculated using…

Q: Potassium-42 is used to locate brain tumors. Its half-life is 12.5 hours. Starting with 15.4 mg,…

A: Given, half life of K-42 = 12.5 hr Initial amount of K-42 = 15.4 mg    To know what fraction will…

Q: A wooden artifact from a Chinese temple has a ¹4C activity of 24.9 counts per minute as compared…

A: we have to calculate the age of the sample of wooden artifact

Q: What is C-14 activity in a sample that is 2.0 x 104 yr old? Assume that C-14 activity in the living…

A:

Q: Decide whether each of the following statements makes sense (or is clearly true) or does not make…

A: Half life time of any compound means the time required for a compound to be decayed to its half of…

Q: A piece of a spear handle is found in an archaeological dig in Central America. It contains 41.7% as…

A: Given, half life of C14 = 5730 yr

Q: wooden object from a burial mound is tested for 14C content, and is found to have an activity that…

A: Concept is based from nuclear chemistry

Q: sample A B C D symbol 95 41 75 34 Nb 18 9 radionuclide Se 55 26 the F Fe half-life 35.0 days 120.…

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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: The following isotopes (listed with their half-lives) have been used in the medical and biological…

A: Activity of any radioactive reactant is given by  Activity = number of particles X decay rate…

Q: A sample of wood from an Egyptian mummy case has a specific activity of 4.71 d/min g. How old is the…

A:

Q: The 14C radioactivity in a sample of fabric claimed to be from an archaeological site is measured as…

A: The objective of this question is to determine the age of a fabric sample from an archaeological…

Q: 20. At the time an item was produced, 0.01 of the carbon it contained was carbon-14, a radioisotope…

A: Solution

Q: What is a radioisotope and explain the term ‘half-life’? Calculate what fraction of a radioisotope…

A: Radioisotope are the radioactive isotope of an Elements  or it can also be defined as the atoms that…

Q: The half-life of carbon-14 is approximately 5730 years. At an archacological dig a fossil is…

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Q: 17 1. on + ? + ENERGY Complete the following nuclear reaction 3H + 2,H O A. SHe <-- + u0 O D.a

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Q: The ratio of C-14 to C-12 in a piece of wood from an archeological site was found to be only 0.354…

A: we have to calculate the age of wood

Q: The half life of a specific radionuclide is 8 days. How much of an 80mg sample will be left after 24…

A: There are two methods to solve it : Method (1): The half life is the time in which any compound is…

Q: Na-24 is used in medicine to study the circulatory system. If one gram of Na-24 decomposes by beta…

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Q: of 8 days much rac

A: Dear student this question is related to nuclear chemistry.

Q: long after an animal dies will it take for the C14 to decrease by 60 percent (to 40 percent of its…

A: Answer  Calculate the half life

Q: Technetium-99m, an important radionuclide in medicine, has a half-life of 6.0 hours. What percentage…

A: