Part 2: Rubidium-Strontium datingA geologist finds an old rock and wants to determine its age using rubidium-strontium dating. This is possible because 87Rb, whichhas a half-life of 4.75×1010 y, undergoes ẞ decay and becomes 87Sr. The geologist determines that the ratio of 87Sr to 87Rb is 0.33.Assuming there was no 87Sr in the rock when it was formed, determine the age of the rock.age of rock = 2.498e10 y X

Approach to solving the question: The formula for the radioactive decay of strontium-87 (87Sr) from…

Answered: Part 2: Rubidium-Strontium dating A…

Similar questions

15. A nucleus with 96 protons (and 248 nucleons) is bombarded with a neutron. Two products emerge from the collision. The first product is a proton. What is the second product? A. A nucleus with 95 protons B. A nucleus with 96 protons C. A nucleus with 151 neutrons D. A nucleus with 152 neutrons
5. Krypton-85 is an inert radioactive noble gas with a half-life of approximately 10.76 years. a. Write an exponential function to model this situation and define each variable. ( b. Determine what fraction of a sample of Krypton-85 will remain after 86.08 years. State the answer as an exact fraction value. ( C. Determine how long will it take for a sample of Krypton-85 to decay to 1/64 of its original mass. Round your answer to the nearest hundredth of a year.
1.What are nuclear reactions? a.reactions that release heat only b.reactions that change the nucleus of an atom c.reactions that absorb heat only d.reactions that change the electron count of an atom
[Review Topics] [References] Radioactive vanadium-48 decays with a half-life of 16.0 days. a. What is the value of k in s12 k = b. A sample contains 58.0 mg 48 t° V. How many decay events will be produced in the first second? Assume the atomic mass of 48 V is 48.0 u. decays/s c. A chemist obtains a fresh sample of 8V and measures its radioactivity. She then determines that to do an experiment, the radioactivity cannot fall below 25% of the initial measured value. How long does she have to do the experiment? days Submit Answer Retry Entire Group 4 more group attempts remaining
Problems:1. Living matter has 1.3 x 10-10 % of its carbon in the form of C-14 which has a half-life of 5730 yr. A mammoth bone has a 300-g sample of carbon separated from it, and the sample is found to have an activity of 20 decays per second. How old is the bone?
Answer the following questions regarding the radioactive isotope radium-226. A.Write a nuclear equation for when this nucleus undergoes beta decay. B.What is the binding energy of a radium-226 nucleus? The mass of radium-226 is 226.02541 amu. C.A rock obtained by geologists was found to obtain 1.38 mg of radium-226. Later studies confirmed that 922 years prior, the rock contained 34.6 mg of radium-226. How many half-lives have elapsed? D.Based on your answer to Question C, determine the half-life of radium-226. E.Based on your answers to Questions C & D, determine the rate constant of the beta decay of radium-226
ms tions urse 4. (P7) The isotope Silver-107 undergoes a gamma decay. Write the reaction equation and determine the identity of the daughter nucleus. (P19) A nucleus of element 114 is produced by fusing calcium - 48 with plutonium - 244. Write the reaction equation assuming three neutrons are also released. 5. EC (P20) The most abundant isotope of lithium, Li-7, contains 3 protons and 4 neutrons and has a mass of 7.01600 u. What is the mass defect for this nucleus in atomic mass units? In Kg?
The half-life of radium-226 is 1.6 x 10 years. How long will it take for 20.0 mg of radium-226 to decay to 2.50 mg? 1.3 x 103 1.6 x 10' years A. years B. 3.2 x 10 years 103 С. D. 4.8 x years
5. Krypton-85 is an inert radioactive noble gas with a half-life of approximately 10.76 years. a. Write an exponential function to model this situation and define each variable. ( b. Determine what fraction of a sample of Krypton-85 will remain after 86.08 years. State the answer as an exact fraction value. ( C. Determine how long will it take for a sample of Krypton-85 to decay to 1/64 of its original mass. Round your answer to the nearest hundredth of a year.
6. In nature, in a stable state hydrogen has two kinds of isotopes, namely 99.985% 1H with an atomic mass of 1.00783 sma and 0.015% 2H with an atomic mass of 2.01410 sma. The average atomic mass of hydrogen is .... (in sma) a. 1.00150 b. 1.00324 c. 1.00798 d. 1.01528 e. 1.07960 Note : all H have the number 1 below 1H
5. Krypton-85 is an inert radioactive noble gas with a half-life of approximately 10.76 years. a. Write an exponential function to model this situation and define each variable. ( b. Determine what fraction of a sample of Krypton-85 will remain after 86.08 years. State the answer as an exact fraction value. ( C. Determine how long will it take for a sample of Krypton-85 to decay to 1/64 of its original mass. Round your answer to the nearest hundredth of a year.
1. What is the binding energy per nucleon for ?? 1327 (Aluminum – 27)? Note: A neutral ?? 1327(Aluminum – 27) atom has a mass of 26.981539 u; a neutral hydrogen atom has a mass of 1.007825 u; a neutron has a mass of 1.0086655 u; and a proton has a mass of 1.007277 u. Also, 1 u = 931.494 MeV/c2.a. 8.3 MeVb. 6.7 MeVc. 5.4 MeVd. 3.4 MeVe. 2.8 MeV

SEE MORE QUESTIONS