Chapter 6, Problem 6.56SP

Interpretation Introduction

Interpretation:

The number of moles of caffeine present in $125\text{ mg}$ of caffeine and the number of molecules present has to be calculated.

Concept Introduction:

Moles:

$\text{No}\text{. of moles (n) = }\frac{\text{mass}}{\text{Molar mass}}$

Number of molecules:

$\text{No}\text{. of molecules = Moles }\times \text{ Avogadro's number}$