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A literature project. Until the 1960s, dinosaurs were thought to be cold-blooded

Quantitative Chemical Analysis | 8th Edition | ISBN: 9781429218153 | Authors: Daniel C. Harris ISBN: 9781429218153 475

Solution for problem 21-33 Chapter 21

Quantitative Chemical Analysis | 8th Edition

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Quantitative Chemical Analysis | 8th Edition | ISBN: 9781429218153 | Authors: Daniel C. Harris

Quantitative Chemical Analysis | 8th Edition

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Problem 21-33

A literature project. Until the 1960s, dinosaurs were thought to be cold-blooded animals, which means they could not regulate their body temperature. Reference 1 describes how the 18O/16O ratio in dinosaur bones suggests that some species were warm blooded. Find reference 1, preferably at http://pubs.acs.org/ac if your institution has an electronic subscription to Analytical Chemistry. Explain how the 18O/16O ratio implies that an animal is warm or cold blooded. Explain the criteria that were used to determine the likelihood that 18O/16O in bone phosphate was altered after the dinosaur died. Describe how bone samples were prepared for analysis of oxygen isotopes and state the results of the measurements.

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 1/9/17  Energy: Potential vs. Kinetic  Potential Energy (PE) - the energy an object has by virtue of its placement in a field of force, like gravity o PE = mgh, where m= mass, g = acceleration due to gravity, h = height  Kinetic Energy (KE)- The energy an object has by virtue of its motion o KE = 1/2 mu where m= mass, u = velocity  Terminology: System & Surroundings  System o That part of the universe you are interested in - you define it  Surroundings o The rest of the universe   Chemical Internal Energ

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Chapter 21, Problem 21-33 is Solved
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Textbook: Quantitative Chemical Analysis
Edition: 8
Author: Daniel C. Harris
ISBN: 9781429218153

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A literature project. Until the 1960s, dinosaurs were thought to be cold-blooded