1. Understand Avogadro's Number:
* Avogadro's number is a fundamental constant that represents the number of atoms or molecules in one mole of a substance.
* It's approximately 6.022 x 10^23 entities per mole.
2. Convert Mass to Moles:
* Molar Mass of Aluminum: The molar mass of aluminum is 26.98 g/mol. This means one mole of aluminum weighs 26.98 grams.
* Conversion:
* 4.1 x 10^-5 g Al * (1 mol Al / 26.98 g Al) = 1.52 x 10^-6 mol Al
3. Calculate Number of Atoms:
* Multiply by Avogadro's Number:
* 1.52 x 10^-6 mol Al * (6.022 x 10^23 atoms Al / 1 mol Al) = 9.16 x 10^17 atoms Al
Therefore, there are approximately 9.16 x 10^17 atoms of aluminum in 4.1 x 10^-5 grams of aluminum.
