Final answer:
The number of sulfur atoms in 27.1 g of molecular sulfur (S₈) is 5.11 x 10²³ sulfur atoms.
Step-by-step explanation:
The molar mass of molecular sulfur (S₈) is 256 g/mol. To determine the number of sulfur atoms in 27.1 g of sulfur, we first need to convert the mass of sulfur to moles. Using the molar mass of sulfur, we can calculate the number of moles:
Moles of sulfur = mass of sulfur / molar mass of sulfur
Moles of sulfur = 27.1 g / 256 g/mol = 0.106 mol
Since there are 8 sulfur atoms in each molecule of S₈, we can calculate the number of sulfur atoms:
Number of sulfur atoms = moles of sulfur * Avogadro's number * number of sulfur atoms in S₈
Number of sulfur atoms = 0.106 mol * 6.022 x 10²³ * 8 = 5.11 x 10²³ sulfur atoms