need to know if all the formulas are right, friggin got like 25% on my last test lol >_>

mass to moles - mass given / atomic mass
moles to mass - mole given x atomic mass

particles to moles - given particles / (6.02x10^23)
moles to particles - (6.02x10^23)(given moles)

moles to number of atoms - mole given x (6.02x10^23) x atoms in molecule
number of atoms to moles - (mole given x atoms in molecule) / (6.02x10^23)

volume of gas to moles - given volume / 22.4
moles to volume of gas - given mole x 22.4