Chapter U4.78, Problem 3E

Interpretation Introduction

Interpretation:

The moles of H-atoms in 2.0 mol of C₂H₆O molecules should be predicted.

Concept Introduction:

The amount of the substance that contains the same number of particles or atoms or molecules is termed as mole.

Answer to Problem 3E

12.0 moles of H-atoms are present in 2.0 mol of C₂H₆O molecules.

Explanation of Solution

According to the given information,

  $\begin{array}{c}\text{1}\text{mol}{\text{C}}_{\text{2}}{\text{H}}_{\text{6}}\text{O}\to \text{6}\text{mol}\text{H-atoms}\\ \text{2}\text{mol}{\text{C}}_{\text{2}}{\text{H}}_{\text{6}}\text{O}\to \left(\text{6}\times \text{2}\right)\text{mol}\text{H-atoms}\\ \to \text{12}\text{mol}\text{H-atoms}\end{array}$

Thus, 12 moles of H-atoms are present in 2.0 mol of C₂H₆O molecules.