Chapter 7.4, Problem 7.42QAP

Interpretation Introduction

(a)

Interpretation:

To calculate the mass percent of S in Na₂SO₄.

Concept Introduction:

If the molecule is AB₂, then:

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

Interpretation Introduction

(b)

Interpretation:

To calculate the mass percent of S in Al₂S₃.

Concept Introduction:

If the molecule is AB₂, then:

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

Interpretation Introduction

(c)

Interpretation:

To calculate the mass percent of S in SO₃.

Concept Introduction:

If the molecule is AB₂, then:

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

Interpretation Introduction

(d)

Interpretation:

To calculate the mass percent of S in C₂H₆SO.

Concept Introduction:

If the molecule is AB₂, then:

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

Interpretation Introduction

(e)

Interpretation:

To calculate the mass percent of S in C₁₀H₁₀N₄O₂S.

Concept Introduction:

If the molecule is AB₂, then:

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