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