Question

what is the mass of 6.022×x10^23 atoms of copper? (mass no. of copper = 63.5)

Answer 1

mass of copper atoms=6.022×10^23 atoms

mass no of copper given as 63.5

no of moles=no of particles÷Avoguadro no

Answer 2

63.5gm is the mass of 6.022×x10^23 atoms of copper

We know, 1 mole of any substance contains Avogadro number of atoms (6.022×10²³)no. of atoms.

Also, mass of 1 mole of any substance = Molar mass of that substance = 63.5 gm.

Thus, 6.022×10²³ no. of atoms of Copper have a mass equal to its Mass no. = 63.5gm.