Chapter 9, Problem 18PE

(a)

Interpretation Introduction

Interpretation:

The number moles of $\text{CaS}$ are produced from $\text{2}\text{.5}\text{mol}\text{CaO}$ has to be given.

Concept Introduction:

Mole ratio:

A mole ratio is a ratio between the numbers of moles of any two species involved in a chemical reaction.

Example,

In the reaction ${\text{2H}}_{\text{2}}{\text{+O}}_{\text{2}}\stackrel{}{\to }{\text{2H}}_{\text{2}}\text{O}$, the mole ratio can be written as $\frac{\text{2}\text{mol}{\text{H}}_{\text{2}}}{\text{1}\text{mol}{\text{O}}_{\text{2}}}.$

(b)

Interpretation Introduction

Interpretation:

The number of grams of $\text{Hg}$ has to be given.

Concept Introduction:

Refer to part (a).

(c)

Interpretation Introduction

Interpretation:

The number of moles of $\text{CaO}$ has to be given.

Concept Introduction:

Refer to part (a).

(d)

Interpretation Introduction

Interpretation:

The number of grams of $\text{Hg}$ produced has to be given.

Concept Introduction:

Refer to part (a).

(e)

Interpretation Introduction

Interpretation:

The number of grams of $\text{CaS}$ produced has to be given.

Concept Introduction:

Refer to part (a).