Chapter 4, Problem 4.45QP

(a)

Interpretation Introduction

Interpretation:

The number of moles present in $\text{50}\text{.0 g}$ of $\text{KBr}$ has to be calculated.

Concept Introduction:

Moles:

Mole of the compound is found by dividing mass of the substance with its molar mass.

  $\text{No}\text{. of moles (n) = }\frac{\text{mass}}{\text{Molar mass}}$

(b)

Interpretation Introduction

Interpretation:

The number of moles present in $\text{50}\text{.0 g}$ of ${\text{MgSO}}_{\text{4}}$ has to be calculated.

Concept Introduction:

Refer part (a)

(c)

Interpretation Introduction

Interpretation:

The number of moles present in $\text{50}\text{.0 g}$ of ${\text{CS}}_{\text{2}}$ has to be calculated.

Concept Introduction:

Refer part (a)

(d)

Interpretation Introduction

Interpretation:

The number of moles present in $\text{50}\text{.0 g}$ of ${\text{Al}}_{\text{2}}{{\text{(CO}}_{\text{3}}\text{)}}_{\text{3}}$ has to be calculated.

Concept Introduction:

Refer part (a)