How many atoms (same as molecules) of sulfur are there in 75g?

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