Chapter 2, Problem 2.140P

Interpretation Introduction

Interpretation:

The mass percentages of $\text{NO}$ in the molecules of nitroglycerin and isoamyl nitrate are to be determined.

Concept introduction:

The molecular mass of a compound is defined as the sum of the atomic masses of atoms of all the elements present in it.

The general formula to calculate the molecular mass of a compound is,

$\text{Molecular mass of the compound}=\left[\begin{array}{l}\Sigma \left(\text{number of atoms of the element}\right)\\ \left(\text{atomic mass of the element}\right)\end{array}\right]$ (1)

The mass percent of an element in a compound is defined as the total concentration of the element in the compound.

The general formula to calculate the total mass of a molecule in a compound is,

$\text{Total mass of a molecule}=\left[\left(\text{total number of molecules}\right)\left(\text{molecular mass }\right)\right]$ (2)

The general formula to calculate the mass percent of a molecule in a compound is,

$\text{Mass percent}=\left(\frac{\text{total mass of the molecule in the compound}}{\text{molecular mass of the compound}}\right)\left(100\right)$ (3)