An old wooden bowl unearthed in an archeological dig is found to have one‑fourth of the amount of carbon‑14 present in a similar sample of fresh wood. The half‑life of carbon‑14 atom is 5730 years. Determine the age t of the bowl in years. t = ? years

Q: Skeletal remains had lost 85%of the C-14 they originally contained. Determine the approximate age…

A:

Q: Complete the table for the radioactive isotope. Half-life Initial Amount After Isotope (years) |…

A:

Q: A piece of a spear handle is found in an archaeological dig in Central America. It contains 42.1% as…

A: Given: Amount of isotope in handle = 42.1 % of a living tree. And the half-life of the isotope…

Q: If the amount of a radioactive element decreases from 2.4 g to 0.30 g in 12 days, what is its…

A: Given: Initial amount of radioactive element, N∘=2.4gFinal amount of radioactive element, N =…

Q: Complete the table for the radioactive isotope. Isotope 239 Pu, Half Life (In years) 24100, Initial…

A: The amount of time required by an element to reduce to half its quantity is called its half-life.

Q: The naturally occurring isotope rubidium-87 decays by beta emission to strontium-87. This decay is…

A: Amount of rubidium = 123.0  μg  Amount of strontium = 5.5 μg Half life time of rubidium = 4.8 × 1010…

Q: An 39 g sample of an isotope of Strontium-90 was formed in 1960 explosion of an atomic bomb at…

A:

Q: Cesium-137, which has a half-life of 30.2 yr, is a componentof the radioactive waste from nuclear…

A: The required formula is:

Q: If the half-life of a radioactive substance is 500 million years and you have 48 atoms of it, how…

A:

Q: 32.  A specimen of charcoal found contains 57% as much 14C as a sample of present day charcoal. What…

A: Given : Half life = 5700 years

Q: Calculate the age of the Shroud of Turin given that the amount of “C found in it is 92 percent of…

A:

Q: pile of radioactive material with a half-life of 10 years needs to sit until 0.0039 of the original…

A:

Q: Number of years Mass of original Carbon 14 remaining (grams) Half-life 1 1/2 5,700 2. 1/4 11.400 1/8…

A: After a half-life period, the mass of the reactant becomes half of the initial mass. So amount…

Q: Complete the table for the radioactive isotope. (Round your answers to two decimal places.) Amount…

A: Given data: Half-life, t1/2 = 1599 years Initial amount, [A]o = 240 g To calculate: Amount [A]t…

Q: The radioactive isotope carbon-14 is used for radiocarbon dating. The half-life of carbon-14 is…

A:

Q: The mass of the atom 919 F is 18.99840 amu.(a) Calculate its binding energy per atom in millions of…

A: The binding energy is the amount of energy needed to form protons and neutrons from a nucleus. The…

Q: Iodine-131 has half life of 9 days meaning that after every 9 days the amount of isotope is reduced…

A: The half-life of Iodine-131 is 9 days. Initial amount =10.0 g  Time = 18 days. 18 days means => 9…

Q: 100.0 grams of an isotope with a half-life of 36.0 hours is present at time zero. How much time will…

A: Radioactive decay follows first order kinetics. Given that half life is 36 hours. So the rate…

Q: A wooden boat discovered just south of the Great Pyramid in Egypt had a carbon-14 content of…

A:

Q: 1.Element F has a quarter life of 10 hrs. If there are 925 milligrams remaining of element F after…

A: SOLUTION: A = AoE-KT  (First order reaction) Quarter life = 10Hours At quarter life A=3Ao/4 3Ao/4 =…

Q: the Cs-131 by life has a half life of 30 years. after 120 years, 2.6 g remain. what is the original…

A:

Q: The half-life of tritium is 12.32 yrs. If 49.1 mg of tritium remains of a sample with an initial…

A:

Q: The half-life of tritium is 12.32 yrs.If 49.1 mg of tritium remains of a sample with an initial mass…

A: The question is based on the concept of chemical kinetics. we have to calculate how much time has…

Q: Solve the following problems and show complete solution. A. Half life of Sr90 is 29 years. What…

A: A.     Half life of Sr-90 ( t1/2) = 29 y           Let ' t '    =  100 y       n × t1/2   =  t…

Q: Radioactive isotopes can be used to calculate the age of materials because their decay rates are A…

A: Interpretation - To tell about radioactive isotope can be used to calculate the age of materials…

Q: Part 1.1. If a radioactive element has a half-life of 2.5 million years, the amount of parent…

A:

Q: The radioisotope potassium-40 decays to argon-40 by positron emission with a half-life of 1.3 × 109…

A:

Q: An 22 g sample of an isotope of Strontium-90 was formed in 1960 explosion of an atomic bomb at…

A:

Q: 48. If the decrease between 18 and 24 years in mass of radioactive matter is 4g, find its initial…

A: Radioactive decay follows first order kinetics.  We know that : k = 0.693/t(0.5) ...(1) k = rate…

Q: A sample contains 9,000 particles of the original isotope for every 63,000 particles of the daughter…

A: Given data : Half-life of the original isotope (t1/2) = 19 years Also given that, the sample…

Q: Q2: a- Calculate the radius and volume also the density of Gold Nuclei (Au). b- The radioactive…

A:

Q: The half-life of carbon-14 is 5730 years. What does this statement mean? [A] It means that carbon-14…

A: Given: The half-life t12 of carbon-14 is 5730 years

Q: Carbon-14 has a half-life of 5730 yr. A living organism has an activity of 15.2 counts per minute…

A:

Q: A chemist wishing to do an experiment requiring " Ca+ (half-life = 4.5 days) needs 8.0 ug of the…

A: Given, No = 8.0 microgram t1/2 = 4.5 days = 108 h t = 72 h

Q: b- The radioactive nucleus Ra has a half-life of approximately 1.6 103 yr. Given that the Solar…

A: Radioactivity is basically a first-order reaction. A first-order reaction means the rat of the…

Q: Complete the following equations with the correct particles and identify the mode of decay. (a) '0→…

A: Given,

Q: . A radioactive parent isotope with 600 atoms. After the decay, 450 daughter atoms were produced.…

A:

Q: Can someone help me solve these problems?

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

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. What is the minimum thickness of a shield made of iron with density (7.8 g/cm'), in order that no…

A: Given,  The energy of beta-ray pass through = 2.27 MeV Density of iron shield = 7.8 g/cm3

Q: Technetium-99 which has a half life of 6 hours is a useful isotope in diagnostic tests. If a patient…

A:

Q: How old is this Martian Rock that is found to be containing 12.5% of a radioactive parent nucleus?…

A: On going from Martian Rock sample containing 100% of the Radioactive nucleus, to 25% of the…

Q: What percent of a parent isotope would remain after two half lives?  50% 25% 13% 66

A: Correct option is (b) 25%

Q: A radioactive isotope has a half-life of 10,000 years. How old is the rock if the ratio of…

A: Ans

Q: Technetium-99 which has a half life of 6 hours is a useful isotope in diagnostic tests. If a patient…

A:

Q: A specimen of charcoal found contains 57% as much 14C as a sample of present day charcoal. What is…

A: Radioactive decay follows the first-order kinetics. The decay constant (λ) and half-life of a…

Q: When will a 1.00 g sample of thorium–232 have a mass of 1.00 mg, knowing that the half – life of…

A:

Q: Technetium-99m is an important isotope used in medical imaging (the m stands for metastable).  Each…

A: The time required to reduce the concentration to half of the initial concentration of the substance…

Q: Strontium-90 has a half life of 28 years. If a 5.31 mg sample was stored for 112 years, what mass of…

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