Chapter 9, Problem 1CR

### Introductory Chemistry: A Foundati...

9th Edition
Steven S. Zumdahl + 1 other
ISBN: 9781337399425

Chapter
Section

### Introductory Chemistry: A Foundati...

9th Edition
Steven S. Zumdahl + 1 other
ISBN: 9781337399425
Textbook Problem
1 views

# hat does the average atomic mass of an element represent? What unit is used for average atomic mass? Express the atomic mass unit in grams. Why is the average atomic mass for an element typically not a whole number?

Interpretation Introduction

Interpretation:

The average atomic mass of elements represents what, should be determined along with the unit which is used for average atomic mass and express the atomic mass unit in grams. The reason should be stated why the average atomic mass for an element typically not a whole number.

Concept Introduction:

The one mole of any substance is equal to the Avogadro number that is 6.022×1023 atoms.

A conversion factor is a numerical ratio which is used to show a measurement in one unit as another unit. It is always equal to 1.

Explanation

Atomic mass unit measures mass in an atomic scale, it is a standard unit for mass. Here, 1 amu is equal to the mass of either one proton or neutron and equals to 1 g/mol. Atomic mass unit is equal to 1/12th of the mass of C-12 atom. For example, if average atomic mass of carbon is 12.01 thus, it is the mass of 1 carbon atom.

One gram is equal to the Avogadro number that is 6.022×1023 amu.

Therefore, the mass of 1

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