Explanation In a naturally occurring sample of a given element, it is possible all atoms do not have the same mass. When atoms differ in their mass numbers, these are referred to as isotopes. The atomic mass which is expressed in terms of atomic mass unit (amu) is therefore an average of the mass of the different isotopes that constitute a given element. For example, carbon exists in nature as: Carbon-12: Atomic Mass = 12...

Chemistry: Structure and Properties (2nd Edition)

2nd Edition

ISBN: 9780134293936

Author: Nivaldo J. Tro

Publisher: PEARSON

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Atoms and Molecules

An atom is the smallest unit of an element that possesses all the properties of that particular element. Molecules are the smallest unit of a substance that possess all the properties of that particular substance.

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Chapter 1, Problem 31E

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The atomic mass of an element.

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Chapter 1, Problem 30E

Chapter 1, Problem 32E

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Chapter 1 Solutions

Chemistry: Structure and Properties (2nd Edition)

Ch. 1 - Explain this statement in your own words and give...Ch. 1 - Explain the main goal of chemistry.Ch. 1 - What are two different ways to classify matter?Ch. 1 - How do solids, liquids, and gases differ?Ch. 1 - Explain the difference between a pure substance...Ch. 1 - Explain the difference between an element and a...Ch. 1 - Explain the difference between a homogeneous and a...Ch. 1 - Describe the scientific approach to knowledge. How...Ch. 1 - Prob. 9E Ch. 1 - What observations did Antoine Lavoisier make? What...

Ch. 1 - What theory did John Dalton formulate?Ch. 1 - What is wrong with the expression, “That is just a...Ch. 1 - Summarize the history of the atomic idea. How was...Ch. 1 - Prob. 14E Ch. 1 - State and explain the law of definite proportions.Ch. 1 - State and explain the law of multiple proportions....Ch. 1 - What are the main ideas in Dalton’s atomic theory?...Ch. 1 - How and by whom was the electron discovered? What...Ch. 1 - Explain Millikan’s oil drop experiment and how it...Ch. 1 - Prob. 20E Ch. 1 - Describe Rutherford’s gold foil experiment. How...Ch. 1 - Describe Rutherford’s nuclear model of the atom....Ch. 1 - If matter is mostly empty space, as suggested by...Ch. 1 - List the three subatomic particles that compose...Ch. 1 - What defines an element?Ch. 1 - Explain the difference between Z (the atomic...Ch. 1 - Where do elements get their names?Ch. 1 - What are isotopes? 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The atomic mass of an element.

Solution Summary: The author explains that the atomic mass of an element is an average of the masses of isotopes comprising the element.

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Chapter 1 Solutions

To determine:

The atomic mass of an element.