Chapter 3.2, Problem 3.7BFP

Interpretation Introduction

Interpretation: An unknown metal $\text{M}$ reacts with $\text{S}$ to form the ${\mathrm{M}}_2{S}_3$ . The name of $\text{M}$ and ${\mathrm{M}}_2{S}_3$ is to be interpreted if $\text{3}\text{.12 g}$ of $\text{M}$ reacts with $\text{2}\text{.88 g}$ of $\text{S}$ .

Concept Introduction: The mathematical expression of the mole concept can write as:

  $\text{Mole =}\frac{\text{Mass}}{\text{Molar mass}}$

1 mole of any substance contains $\text{6}\text{.022 }\times {\text{ 10}}^{\text{23}}$ number of particles or atoms or molecules.