# How many atoms are in 2.70 moles of iron atoms?

$1.63 \cdot {10}^{24}$

#### Explanation:

A mole is ~6.022*10^23 of something

So, saying you have a mole of iron atoms is like saying you have $6.022 \cdot {10}^{23}$ iron atoms

This means that 2.70 moles of iron atoms is

$2.70 \cdot \left(6.022 \cdot {10}^{23}\right)$ iron atoms

2.7*(6.022*10^23)=~1.63*10^24

Therefore you have $1.63 \cdot {10}^{24}$ iron atoms