Chapter 3, Problem 112CP

Interpretation Introduction

Interpretation: Name, chemical formula of the chemical fertilizer compound and Lewis diagrams for the two types of ions that make it up should be given.

Concept introduction: Molar mass is defined as average mass of atoms present in the chemical formula. It is the sum of the atomic masses of all the atoms present in the chemical formula of any compound.

The formula to calculate mass percent composition for each element is,

  $\%\text{mass}=\frac{M_1}{M_w}$

Inorganic polyatomic cations have special names such as ammonium, $N{H}_4{}^{+}$ (obtained by adding H to ammonia); hydronium $H_3{O}^{+}$ (obtained by adding H to water).

Many polyatomic anions exist. The names of the oxyanions are derived by adding the suffix -ate to the end of the name of the second element.

Lewis structure of a compound is referred to as a simplified representation of the valence shell electrons of a molecule.