To determine the number of atoms in a given mass of a substance, you need to use Avogadro's number and the molar mass of the element.
The molar mass of sulfur (S) is approximately 32 grams per mole (g/mol) according to the periodic table.
To calculate the number of moles in 64 grams of sulfur, you divide the mass by the molar mass:
64 g S / (32 g/mol) = 2 moles of sulfur
Avogadro's number states that there are approximately 6.022 × 10^23 atoms in one mole of any substance. Therefore, the number of atoms in 2 moles of sulfur can be calculated as:
2 moles S × (6.022 × 10^23 atoms/mol) = 1.2044 × 10^24 atoms of sulfur
So, there are approximately 1.2044 × 10^24 atoms in 64 grams of sulfur.