Chapter 7.4, Problem 41PP

(a)

Interpretation Introduction

Interpretation:To calculate the mass percent of N in N₂O₅.

Concept Introduction :

If the molecule is AB₂, then:

  $\text{Mass percent of A atom=}\frac{\text{mass}\text{of}\text{A}\text{atom}}{\text{mass}\text{of}{\text{AB}}_{\text{2}}\text{molecule}}\text{×100}$

(b)

Interpretation Introduction

Interpretation:To calculate the mass percent of N in NH₄Cl.

Concept Introduction :

If the molecule is AB₂, then:

  $\text{Mass percent of A atom=}\frac{\text{mass}\text{of}\text{A}\text{atom}}{\text{mass}\text{of}{\text{AB}}_{\text{2}}\text{molecule}}\text{×100}$

(c)

Interpretation Introduction

Interpretation:To calculate the mass percent of N in C₂H₈N₂.

Concept Introduction :

If the molecule is AB₂, then:

  $\text{Mass percent of A atom=}\frac{\text{mass}\text{of}\text{A}\text{atom}}{\text{mass}\text{of}{\text{AB}}_{\text{2}}\text{molecule}}\text{×100}$

(d)

Interpretation Introduction

Interpretation:To calculate the mass percent of N in C₉H₁₅N₅O.

Concept Introduction :

If the molecule is AB₂, then:

  $\text{Mass percent of A atom=}\frac{\text{mass}\text{of}\text{A}\text{atom}}{\text{mass}\text{of}{\text{AB}}_{\text{2}}\text{molecule}}\text{×100}$

(e)

Interpretation Introduction

Interpretation:To calculate the mass percent of N in C₁₄H₂₂N₂O.

Concept Introduction :

If the molecule is AB₂, then:

  $\text{Mass percent of A atom=}\frac{\text{mass}\text{of}\text{A}\text{atom}}{\text{mass}\text{of}{\text{AB}}_{\text{2}}\text{molecule}}\text{×100}$