Chapter 5, Problem 5.85P

Interpretation Introduction

(a)

Interpretation:

The mass in grams of 3.60 mol of lactic acid should be determined.

Concept Introduction:

The formula used to determine the number of moles is:

  $\text{number of mole = }\frac{\text{mass}}{\text{molar mass}}$

Interpretation Introduction

(b)

Interpretation:

The mass in grams of 0.580 mol of lactic acid should be determined.

Concept Introduction:

The formula used to determine the number of moles is:

  $\text{number of mole = }\frac{\text{mass}}{\text{molar mass}}$

Interpretation Introduction

(c)

Interpretation:

The mass in grams of $\text{7}\text{.3 }\times {\text{ 10}}^{24}$ molecules of lactic acid should be determined.

Concept Introduction:

Molar mass is the mass of one mole of a substance. One mole of any substance contains $\text{6}\text{.022 }\times {\text{10}}^{23}$ molecules.

Interpretation Introduction

(c)

Interpretation:

The mass in grams of $\text{6}\text{.56}\times {\text{ 10}}^{22}$ molecules of lactic acid should be determined.

Concept Introduction:

Molar mass is the mass of one mole of a substance. One mole of any substance contains $\text{6}\text{.022 }\times {\text{ 10}}^{23}$ molecules.