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

This number helps chemists figure out how to change between moles and tiny particles like atoms or molecules when they are working on chemical reactions.

Here are some ways Avogadro's Number is used:

1. Calculating Moles:

   • For example, if you have 1 mole of carbon, that means you have $6.022 \times 10^{23}$ carbon atoms.

2. Stoichiometric Calculations:

   • In a chemical reaction like this:
     [ \text{C} + \text{O}_2 \rightarrow \text{CO}_2 ]
   • Chemists use molar ratios. These help them figure out how much of each ingredient is needed.

3. Real-Life Examples:

   • Scientists can use this number to find out how many molecules are in a gas when conditions are normal. This is really important for understanding how reactions work in the environment.