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Radioactive cobalt-60 is used to study defects in vitamin

Chemistry | 8th Edition | ISBN: 9780547125329 | Authors: Steven S. Zumdahl ISBN: 9780547125329 153

Solution for problem 82 Chapter 19

Chemistry | 8th Edition

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Chemistry | 8th Edition | ISBN: 9780547125329 | Authors: Steven S. Zumdahl

Chemistry | 8th Edition

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Problem 82

Radioactive cobalt-60 is used to study defects in vitamin B12 absorption because cobalt is the metallic atom at the center of the vitamin B12 molecule. The nuclear synthesis of this cobalt isotope involves a three-step process. The overall reaction is iron- 58 reacting with two neutrons to produce cobalt-60 along with the emission of another particle. What particle is emitted in this nuclear synthesis? What is the binding energy in J per nucleon for the cobalt-60 nucleus (atomic masses: 60Co 59.9338 amu; 1 H 1.00782 amu)? What is the de Broglie wavelength of the emitted particle if it has a velocity equal to 0.90c where c is the speed of light?

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Earth History Early Life Chemosynthetic Organisms: inject sulfur into the atmosphere ­ Places today that prove how Earth’s processes occurred at the beginning of the planet’s life, also organisms living in these places can prove that ­ Yellowstone National Park: Archaea (first organisms & THEN chemosynthetic organisms evolved on Earth) Archean Life: Stromatolites: cyanobacteria (blue – green algae) ­ 1 life (prokaryotes): 3.5 billion years ago Steranes: molecular fossils 2.7 billion years ago ­ Chemicals that are part of eukaryotic cells (2.1 billion years ago) Organisms: CaCO3 (invertebrates) CaPO4 (bone)  late Proterozoic ­ Hard parts: store crucial elements & protect soft parts & anchorage structure for muscles & tissues ­defensive structure Archean cratons formed during collisions of island arcs and mini­continents during the period of the formation of Laurentia

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Chapter 19, Problem 82 is Solved
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Textbook: Chemistry
Edition: 8
Author: Steven S. Zumdahl
ISBN: 9780547125329

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Radioactive cobalt-60 is used to study defects in vitamin