Chapter 3.1, Problem 3.1AFP

Interpretation Introduction

Interpretation:

The moles of carbon in $\text{315 mg}$ of graphite is to be determined. The road map for the calculation of the moles of carbon in $\text{315 mg}$ of graphite is to be shown.

Concept introduction:

The mass of one mole of the entities (atoms, molecules, or formula units) of a substance that has units of $\text{g/mol}$ is called molar mass.

The SI unit for amount of substance is $\text{mol}$. One mole is defined as the amount of substance that contains the same number of entities such as molecules, ions, atoms as the number of atoms in $12\text{ g}$ of $\text{C-12}$.

The mass and molar mass of a substance is used to calculate the amount of substance.  The expression to calculate the amount of a substance is as follows:

$\text{Amount }\left(\text{mol}\right)=\left(\text{Mass }\left(\text{g}\right)\right)\left(\frac{\text{1 mol}}{\text{no}\text{. of grams}}\right)$