Chapter 5.1, Problem 5.3P

(a)

Interpretation Introduction

Interpretation:

The products and reactants have to be labeled and the number of atoms in each type of element present in both sides of the equation has to be indicated.

The given equation is,

  ${\text{2H}}_{\text{2}}{\text{O}}_{\text{2}}\left(\text{aq}\right)\stackrel{}{\to }{\text{2H}}_{\text{2}}\text{O}\left(\text{l}\right){\text{+O}}_{\text{2}}\text{(g)}$

Concept Introduction:

Reactants are present on the left side of the arrow and products are present on the right side in the chemical equation.

When a formula comprises of a subscript, the coefficient is multiplied by the subscript to get the total number of atoms present in formula.  If there is no coefficient present, it is assumed as one.

(b)

Interpretation Introduction

Interpretation:

The products and reactants have to be labeled and the number of atoms in each type of element present in both sides of the equation has to be indicated.

The given equation is,

  $\text{2}{\text{C}}_{\text{8}}{\text{H}}_{\text{18}}\text{+25}{\text{O}}_{\text{2}}\text{=16}{\text{CO}}_{\text{2}}\text{+18}{\text{H}}_{\text{2}}\text{O}$

Concept Introduction:

Refer to part (a).