Question

find the number of atom in46 gm of Na​

Answer 1

46 / 23 = moles = atoms / 6.022 * 10^23

atoms = 2 * 6.022 * 10^23

= 12.044 * 10^23

Answer 2

1 mole sodium contain 6.023 *10^23

number of mole of sodium atom of 46 gm=46/23=2mole

so total number of atoms contain 46 g of sodium=12.046*10^23