Question

Calculate the number of particle in each of the following [1 ] 46g of Na atoms [number from mass]

Answer 1

mass of Na=23gm

no of moles=given weight/molecular weight

=46/23

=2 moles

we know that in 1 mole 6.022*10^23 particles are present therefore in 2 moles

12.022*10^23 particles are present