# How many iron and chlorine atoms are there in an 18*mol quantity of FeCl_3?

Dec 10, 2017

How many eggses in 18 dozen eggs? Are there not 216 individual eggs?

#### Explanation:

The mole is simply another collective number like a dozen, or a gross, or a score; just as there are $\text{12 items per dozen}$, there are $6.022 \times {10}^{23}$ $\text{items per mole}$. Chemists often use the abbreviation ${N}_{A}$ to represent this number.

And so we gots an $\text{18 mole quantity}$ of $F e C {l}_{3}$. Do you agree that CLEARLY there are $54 \cdot m o l$ of chloride ions, and $\text{18 mole}$ of $F {e}^{3 +}$ ions?

What is the mass of this molar quantity?

And why should we use such an absurdly large number like a mole? If the answer is not immediately apparent, then what is the MASS of $6.022 \times {10}^{23}$ $\text{individual hydrogen atoms?}$ The mole is thus the link between the sub-micro world or atoms and molecules, to the macro world of grams and litres.....