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When astronomers observe distant galaxies, they can tell

Chemistry: A Molecular Approach | 3rd Edition | ISBN: 9780321809247 | Authors: Nivaldo J. Tro ISBN: 9780321809247 1

Solution for problem 36E Chapter 1

Chemistry: A Molecular Approach | 3rd Edition

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Chemistry: A Molecular Approach | 3rd Edition | ISBN: 9780321809247 | Authors: Nivaldo J. Tro

Chemistry: A Molecular Approach | 3rd Edition

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Problem 36E

When astronomers observe distant galaxies, they can tell that most of them are moving away from one another. In addition, the more distant the galaxies, the more rapidly they are likely to be moving away from each other. Can you devise a hypothesis to explain these observations?

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Solution 36E: There are two types of number in scientific work. (i) Exact number - exactly the values are known when it is measured. The values which are obtained from any measurement is completely certain value. The values have no uncertainty. (ii) Inexact number- These number have some sort of uncertainty in their values. The measured values are uncertain. a) the mass of a 32-oz can of coffee, It is an inexact number. This is because, the mass of a 32 oz can of coffee can be measured in different equipment and it will always give a different value. This measurement is associated with equipment error. (b) the number of students in your chemistry class It is always an exact number. The number of students in my chemistry class will always be same at least for a year and the counting of the students always give the exact number. (c) the temperature of the surface of the Sun, It is always an inexact number....

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Chapter 1, Problem 36E is Solved
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Textbook: Chemistry: A Molecular Approach
Edition: 3
Author: Nivaldo J. Tro
ISBN: 9780321809247

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When astronomers observe distant galaxies, they can tell

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