Chapter 4, Problem 4.94QP

(a)

Interpretation Introduction

Interpretation:

The formula mass of glycerol has to be calculated.

Concept Introduction:

Formula mass:

Formula mass of a compound is the sum of the atomic masses of all atoms in the compound.  It is expressed in $\text{amu}$.

(b)

Interpretation Introduction

Interpretation:

The number of oxygen atoms present in one mole of glycerol compound has to be calculated.

(c)

Interpretation Introduction

Interpretation:

The amount of oxygen present in one mole of glycerol compound has to be calculated.

Concept Introduction:

Mass:

Mass of the compound is calculated by mole of the compound multiplied with molar mass of the compound.

  $\text{Mass}\text{=}\text{Molar}\text{mass}\text{×}\text{mole}$

(d)

Interpretation Introduction

Interpretation:

The amount of oxygen present in $\text{50}\text{.0 g}$ of glycerol compound has to be calculated.

Concept Introduction:

Moles:

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

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