Mole -> number of particles
Number of moles x 6 x 1023
Number of particles -> mass
Number of particles / 6 x 1023 = no. moles x molecular/atomic mass
no. moles -> mass
no. moles x molecular/ atomic mass
mass -> no. moles
Mass / molecular/atomic mass
no. particles -> no. moles
no. particles / 6 x 1023