Chapter 3, Problem 40E

Interpretation Introduction

Interpretation: The number of ethylene dibromide (EDB) molecules present in $1.0\text{lb}$ of flour when $30.0\text{ppb}$ of $\left(\text{EDB}\right)$ present is to be calculated.

Concept introduction: Molar mass of any substance can be calculated by taking summation of all the elements present in it.

Mole of any substance is a physical unit which is used to computethe chemical calculations. Number of moles in any substance is to be calculated as follows.

  $\text{Number}\text{of}\text{moles}=\frac{\text{Given}\text{}\text{mass}\text{of that substance}}{\text{Molar}\text{mass}\text{}\text{of}\text{that substance}}$