The number of atoms of sulfur that are there in 75 g is 1.411 x 10²³ atoms
calculation
Step 1: find the number of moles of sulfur
moles = mass÷ molar mass
from periodic table the molar mass of sulfur is = 32 g/mol
moles = 75 g/ 32 g/mol= 2.344 moles
Step 2: use the Avogadro's constant to calculate the number of atoms
that is According to Avogadro's law 1 mole = 6.02 x 10²³ atoms
2.344 moles = ? atoms
by cross multiplication
=[ (2.344 moles x 6 .02 x 10²³ atoms) / 1 mole] =1.411 x 10²⁴ atoms
