Avogadro's Number is a big number: about (6.022 \times 10^{23}).

We use it in chemistry to help us understand moles and tiny parts called particles.

Let’s break it down into two steps:

1. Going from Atoms to Moles:

   • If you want to find out how many moles you have when you know the number of atoms, use this formula: [ \text{Moles} = \frac{\text{Number of Atoms}}{6.022 \times 10^{23}} ]

2. Going from Moles to Atoms:

   • If you have the number of moles and want to find out how many atoms that is, use this formula: [ \text{Number of Atoms} = \text{Moles} \times 6.022 \times 10^{23} ]

Example:

• Let’s say you have 12 moles of carbon atoms.
• To find out how many atoms that is, you can calculate: [ \text{Number of Atoms} = 12 \times 6.022 \times 10^{23} \approx 7.22 \times 10^{24} \text{ atoms} ]

So, 12 moles of carbon atoms is about (7.22 \times 10^{24}) atoms.

Pretty cool, right?