Question

How many atoms are in 54 grams of aluminum

Answer 1

The number of atoms in a sample can be calculated using Avogadro’s number, which is approximately 6.022×1023

atoms per mole.

First, we need to convert the mass of the sample to moles. The molar mass of aluminum (Al) is approximately 27 grams per mole. So, 54 grams of aluminum is equivalent to 54​/27=2

moles.

Then, we multiply the number of moles by Avogadro’s number to find the total number of atoms:

2moles×6.022×1023atoms/mole=1.2044×1024atoms

So, there are approximately 1.2044×1024

atoms in 54 grams of aluminum1.