Chapter 2, Problem 2.28P

Interpretation Introduction

Interpretation:

The mass percent of the calcium in dolomite and the richer source of calcium among dolomite and fluorite is to be determined.

Concept introduction:

The mass fraction of an element in a compound is defined as the ratio of the sum of the masses of all the atoms of that element to that of the mass of one mole of compound.

$\text{Mass fraction of A}=\frac{\text{Total mass of A }\left(\text{g}\right)}{\text{Mass of 1 mol compound }\left(\text{g}\right)}$

Mass percent of an element represents the percentage concentration of that element in a compound. It is equal to the mass fraction expressed as a percentage. The general formula to calculate the mass percent of an element A in a compound is as follows:

$\text{Mass \% of element A}=\left(\text{mass fraction of element A}\right)\left(100\right)$