Chapter 8.1, Problem 8.5QAP

Interpretation Introduction

(a)

Interpretation:

The number of atoms of each element in the following reactants and in the products should be determined.

  $\text{2Na}\left(\text{s}\right){\text{ + Cl}}_{\text{2}}\left(\text{g}\right)\to \text{2NaCl}$

Concept Introduction:

In order to find the number of atoms in a molecule, multiply the coefficient placed before the molecule with the subscript of each atom of the element in the molecule.

Interpretation Introduction

(b)

Interpretation:

The number of atoms of each element in the following reactants and in the products should be determined.

  ${\text{PCl}}_{\text{3}}\left(\text{l}\right){\text{ + 3H}}_{\text{2}}\left(\text{g}\right)\to {\text{PH}}_{\text{3}}\left(\text{g}\right)\text{ + 3HCl}\left(\text{g}\right)$

Concept Introduction:

In order to find the number of atoms in a molecule, multiply the coefficient placed before the molecule with the subscript of each atom of the element in the molecule.

Interpretation Introduction

(c)

Interpretation:

The number of atoms of each element in the following reactants and in the products should be determined.

  ${\text{P}}_{\text{4}}{\text{O}}_{\text{10}}{\text{+ 6H}}_{\text{2}}\text{O}\left(\text{l}\right)\to {\text{4H}}_{\text{3}}{\text{PO}}_{\text{4}}\left(\text{aq}\right)$

Concept Introduction:

In order to find the number of atoms in a molecule, multiply the coefficient placed before the molecule with the subscript of each atom of the element in the molecule.