Naturally occurring cobalt consists of only one isotope, 58.9332. A synthetic radioactive isotope of cobalt, 6"Co, relative atomic mass 59.9338, is used in radiation therapy for cancer. A 1.7979 g sample of cobalt has an apparent "atomic mass" of 58.9901. 59 Co, whose relative atomic mass is Part A Find the mass of 0" Co in this sample. Express your answer with the appropriate units. HA ? Value Units m =

Naturally occurring cobalt consists of only one isotope, 58.9332. A synthetic radioactive isotope of cobalt, 6"Co, relative atomic mass 59.9338, is used in radiation therapy for cancer. A 1.7979 g sample of cobalt has an apparent "atomic mass" of 58.9901. 59 Co, whose relative atomic mass is Part A Find the mass of 0" Co in this sample. Express your answer with the appropriate units. HA ? Value Units m =

Chemistry for Engineering Students

4th Edition

ISBN:9781337398909

Author:Lawrence S. Brown, Tom Holme

Publisher:Lawrence S. Brown, Tom Holme

Chapter2: Atoms And Molecules

Section: Chapter Questions

Problem 2.19PAE: 2.19 Naturally occurring uranium consists of two isotopes, whose masses and abundances are shown...

See similar textbooks

Similar questions

2.19 Naturally occurring uranium consists of two isotopes, whose masses and abundances are shown below: Only 235U can be used as fuel in a nuclear reactor, so uramium for use in the nuclear industry must be enriched in this isotope. If a sample of enriched uranium has an atomic weight of 235.684 amu, what percentage of 235LT is present?
An element consists of 1.40% of an isotope with mass 203.973 u, 24.10% of an isotope with mass 205.9745 u, 22.10% of an isotope with mass 206.9759 u, and 52.40% of an isotope with mass 207.Y766 u. Calculate the average atomic mass, and identify the element.
In what way are isotopes of a given element always different? In what way(s) are they always the same?
Cerium is the most abundant rare earth metal. Pure cerium ignites when scratched by even a soft object. It has four known isotopes: 136Ce(atomicmass=135.907amu) ,138Ce(atomicmass=137.905amu) ,140Ce(atomicmass=139.905amu), and142Ce(atomicmass=141.909amu). Ce-140 and Ce-142 are fairly abundant. Which is the more abundant isotope?
Naturally occurring silver (Ag) consists of two isotopes. One of the isotopes has a mass of 106.90509 amu and 51.84% abundance. What is the atomic mass of the other isotope?
2.87 What is the heaviest element to have an atomic weight that is roughly twice its atomic number? What does this suggest must he true about the nuclei of atoms with higher atomic numbers?
Neon is an inert gas with three stable isotopes. It is used in gas lasers and in advertising signs. Its isotopes and their abundances are: Ne-20 19.9924 amu 90.51% Ne-21 20.9938 amu 0.27% Ne-22 21.9914 amu 9.22% What is the average atomic mass of neon?
The following table presents the abundances and masses of the isotopes of zinc. What is the atomic weight of zinc?
How would you expect the chemical properties of isotopes of the same element to compare to each other? Explain your answer.
Write the following isotopes in hyphenated form (e.g., carbon-14). (a) N1124a (b) A1329l (c) K3673r (d) I77194r
Which of the following are isotopes of element X, the atomic number for which is 9: 919X, 920X, 189X, and 921X?
Though the common isotope of aluminum has a mass number of 27, isotopes of aluminum have been isolated (or prepared in nuclear reactors) with mass numbers of 24, 25, 26, 28, 29, and 30. How many neutrons are present in each of these isotopes? Why are they all considered aluminum atoms, even though they differ greatly in mass? Write the atomic symbol for each isotope.