(7) Carbon-14 dating is used in archeology to determine the age of items that were alive or were made from living materials. This works because the proportion of radioactive Carbon-14 to the other isotopes of Carbon is relatively constant in the atmo- sphere. (Volcanos constantly refresh the C-14 content.) A wooden tool from an archeological site is found to contain 22 micrograms of C-14, whereas a similar hnount of modern wood would contain 100 micrograms. How old is the tool?

Q: Polonium is a rare element with 33 radioisotopes. The most common one, 210Po, has 82 protons and 128…

A: Radioactive decay refers to the breakdown of an unstable nucleus to a stable nucleus with the…

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: What is the change in the nucleus that results from the following decay scenarios?(a) emission of a…

A: Sometimes atoms aren’t happy just being themselves; they suddenly change into completely different…

Q: (5). You are given neutrons and protons in nuclei, which could exist in separate nucleon orbitals.…

A: The neutron-proton ratio (N/Z ratio) is the ration of its number of neutrons to its number of…

Q: The isotope 232Th decays to 208Pb by the emission of six alpha particles, with a half-life of 1.39 ×…

A: Given: Final amount of thorium = 7.4 mg Volume of helium gas     = 4.9 x 10-3 cm3 Half life of decay…

Q: Plutonium­239 is the fissionable isotope produced in breeder reactors; it is also produced in…

A: Nuclear  chemistry is the branch  of chemistry deals with the radioactivity , nuclear process and…

Q: (b) A Tokamak fusion reactor operating at a steady 1 GW thermal power has an equimolar…

A:

Q: Potassium-40, which is presumed to have existed at the formation of the Earth, is used for dating…

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

Q: Rhenium-186 is a radioactive isotope ( t1/2 = 4.0 days) used for pain relief in bone cancer. (a) How…

A: Solution-  (a)rhenium-186atomic no =75No of e-=No of proton=186-75=11175186(b).R75186e →Os76186 +…

Q: 46. What is the identity of the element X formed in the beta-decay of 14C? (A) B (B) C (C) N (D) O…

A: Beta decay, the proton in the nucleus is transformed into a neutron and vice versa. If a proton is…

Q: (a) What mass of Na₂38SO4 has an activity of 11.7 mCi? Sulfur-38 has an atomic mass of 38.0 and a…

A:

Q: The curie (Ci) is a commonly used unit for measuring nuclear radioactivity: 1 curie of radiation is…

A: activity (dN / dt) = 11.7 mCi = 11.7 / 1000 Ci = 0.0117 Ci = 0.0117 * 3.7 * 10^10 = 4.329 * 10^8…

Q: Americium-241 is the most common isotope of americium. It is commonly found in ionization type smoke…

A:

Q: 20. Balance the following nuclear equations by filling in the blanks.. (a) U-238 + proton – Np-238 +…

A: Hello. Since the question contains multiple subparts, the first three subparts are solved. In case…

Q: 90Sr is one of the most deadly products of nuclear fi ssion. Assume that 4% of the fi ssion fragment…

A:

Q: Complete the following nuclear equations, thought to be the source of the energy of some stars. (a)…

A: Like chemical reactions, nuclear reactions are type of chemical reaction only but here in place of…

Q: Radioactive decay can be described by the following equation In A = In Ao – kt where Ao is the…

A:

Q: (26) When plutonium-239 is bombarded with a neutron, it produces xenon-137, zirconium-95, and…

A: Here we have to determine the energy produced in the nuclear fission of 239-Pu having a mass of…

Q: Representations of three nuclei (with neutrons gray andprotons purple) are shown below. Nucleus 1 is…

A: The nuclear process that deals with the conversion of an unstable nucleus to a more stable nucleus…

Q: a) Energy is required to separate a nucleus into its constituent nucleons, as the drawing indicates;…

A: Energy is required to separate a nucleus into its constituting nucleons .

Q: The ratio of the isotopes carbon-14 (14C, radioactive and decaying) to carbon-12 (12C…

A: The ratio of the isotopes carbon-14 (14C, radioactive and decaying) to carbon-12 (12C…

Q: Americium-241 is the most common isotope of americium. It is commonly found in ionization type smoke…

A:

Q: 1. (a) The amount of U-238 in a sample decays exponentially. Every 2 billion years, 27% of the…

A:

Q: The nuclide 131I undergoes beta decay with a half-life of 8.041 days. Large quantities of this…

A:

Q: 1. Carbon Decay In living organic material, the ratio of the number of radioactive carbon isotopes…

A: The given question is self explanatory. Formula is given in question.

Q: You want to find out how many atoms of the isotope 65Cu are in a small sample of material. You…

A:

Q: Strontium-90 is one of the most hazardous products of atomic weapons testing because of its long…

A: The radioactive nucleus will decay by ejection of some particles like alpha, beta, gamma, etc. It…

Q: You are working as a technician in the radiology department of a large hospital. One of the…

A: The relation between activity, total time and half-life is shown below:

Q: 5) Iodide I-123 (as sodium Iodide I-123) is a radioactive isotope of iodine used in nuclear medicine…

A: Hello. Since your question has multiple sub-parts, we will solve first three sub-parts for you. If…

Q: 214Bi decays to isotope A by alpha emission; A then decays to B by beta emission, which decays to C…

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.