A sample of uranium ore contains 5.37 mg of U-238 and 2.52 mg of Pb-206. (a) Calculate the 238U/206Pb atomic ratio in the ore? (a) What is the age of the ore? The half-life of U-238 is 4.5 x 109 yr. (c) What will be the 238U/206Pb atomic ratio in a rock sample that is 5.0 billion years old? (Assume that the ore did not contain isotope lead-206 in the beginning.)

Q: The half-life of bismuth-210, 210Bi, is 5 days. (a) If a sample has a mass of 216 mg, find the…

A: The decay of radioactive elements follows first order kinetics. So we would use first order reaction…

Q: A 6.2 mg sample of 90Sr (half-life 29.12 y) is in secular equilibrium with its daughter 90Y…

A: a) At equilibrium        λsrNsr = λyNy              Nsr = λyNyλsr                     = 29.12y365…

Q: A laboratory investigation shows that a sample of uranium ore contains 10.88 mg of 238U 92 206…

A: Radioactive decay is the process where the unstable nuclei get converted into stable daughter nuclei…

Q: (21) Fluorine-18 is a radioactive isotope commonly used in medicine. It has a half-life of 110…

A:

Q: 7. If we start with 1.000 g of strontium-90, 0.953 g will remain after 2 years. (a) What is the…

A: Reladioactive decay reactions are first order reactions which can be solved as follows using…

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: A rock containing 238U and 206Pb was examined to determine its approximate age. The sample of a rock…

A:

Q: A sample of Uranium-234 has been decomposing. If the original mass of 234U is 2.57milligrams, how…

A:

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: (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: A 27.00 gg sample of water containing tritium, 3-1H, emits 1250 beta particles per second. Tritium…

A:

Q: Part 1 The half-lives of 235U and 23$U are 7.04 x 10° years and 4.47 x 10° years, respectively, and…

A:

Q: (a) the energy released in joules for a single event (one uranium atom splitting):…

A: In order to find energy released by the given reaction, we have to calculate the mass defect(∆m) of…

Q: The nuclear mass of 48 Ti is 47.9359 amu. Calculate the binding energy per nucleon for 48 Ti. AE per…

A: Given, nuclear mass of 48Ti = 47.9359 amu ( actual mass ) We know, 1 MeV = 1.602 × 10-13 joule Mass…

Q: (a) The molar mass of 144 Nd is 144 g/mol. A sample of ¹44 Nd has a mass of 53.94 g and emits an…

A:

Q: Radiation seed therapy is a common method for treating some prostate cancers and brain tumors.…

A: Radioactive degradation follow first order kinetics.

Q: 8. Strontium-90 has a half-life of 28 days. ovn brs (a) A sample has a mass of 50 mg initially. Find…

A:

Q: Radioactive rhodium-99 decays with a half-life of 16.1 days. (a) What is the value of k in s-¹? -1…

A: Answer:Nuclear reactions are the first order reactions in which decay of radioactive material takes…

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: The mass of the atom 23/11 Na is 22.9898 amu.(a) Calculate its binding energy per atom in millions…

A: Given: Notation for Na-11 is  N1123a Mass of sodium = 22.9898 amu Total protons in 23Na = 11 Total…

Q: The half-life of 14C is 5730 yr. Find the number of disintegrations per hour emitted by 1.0 mol of…

A: half-life of 14C is 5730 yr.

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.