How many moles of sodium atoms do you have if you have 5.00 × 10²³ atoms of sodium. (The mass of one mole of sodium is 22.99 g.)

Answer 1

The number of moles is just a count of the particles you have (nothing to do with the mass, so that part is just thrown in to mess with you). Avogadro's number (6.022 x 10²³ particles) is the number of particles in a mole of those particles. So since there are 6.022 x 10²³ atoms of sodium in a mole of sodium: