Number of atoms in 6.30 moles of selenium Se has to be determined. Concept introduction: A mole is 6 .022 × 10 23 of anything. 6 .022 × 10 23 Is known as Avogadro number . Atom is the smallest particle of a chemical element. The number of atom of a substance can be calculated by multiplying the Avogadro number with the moles of the given substance. Number of atoms = Moles of Substance ×Avogadro Number

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Chapter 2, Problem 2.54QP

Interpretation Introduction

Interpretation:

Number of atoms in 6.30 moles of selenium Se has to be determined.

Concept introduction:

A mole is 6.022 ×1023 of anything.

6.022 ×1023 Is known as Avogadro number.

Atom is the smallest particle of a chemical element.

The number of atom of a substance can be calculated by multiplying the Avogadro number with the moles of the given substance.
Number of atoms = Moles of Substance ×Avogadro Number

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