Chapter 4, Problem 17QP

Interpretation Introduction

Interpretation:

The number of ${\text{NH}}_3$ molecules, nitrogen atoms, and hydrogen atoms are to be calculated.

Concept Introduction:

A mole is a unit amount of substance. It relates a number of particles to molar mass.

One mole of any substance contains an Avogadro number $6.022\times {10}^{23}$ particles. The number remains constant regardless of the nature of the substance. One mole of an atom contains $6.022\times {10}^{23}$ atoms. One mole of molecules contains $6.022\times {10}^{23}$ molecules.