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Chapter 3: Problem 8

Define mole.

Short Answer

Expert verified
A mole is a unit of measurement used in chemistry to express amounts of a chemical substance, defined as exactly \(6.022 \times 10^{23}\) entities, such as atoms, molecules, or ions. This is equivalent to the number of atoms in 12 grams of pure Carbon-12. It is a fundamental concept in stoichiometry.

Step by step solution

01

Identify the basic definition

A mole is a basic unit of measurement in chemistry. It is used to express amounts of a chemical substance.
02

Explain the connection to Avogadro's number

One mole of any substance contains the same number of entities (such as atoms, molecules, or ions) as there are atoms in 12 grams of pure Carbon-12. This number is known as 'Avogadro's number' and it's approximately \(6.022 \times 10^{23}\).
03

Elaborate on its utility

The mole is extensively used in stoichiometry or the study of relationships between amounts of reactants and products in a chemical reaction.

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