How many g-atoms and no. of atoms are there in 120 g carbon?
No. of g-atoms of Carbon = mass of carbon / at. mass of carbon = 120/12 = 10
1 g-atom of carbon has no. of atoms = 6.023 x 1023
10 g-atoms of carbon has no. of atoms 10 x 6.023 x 1023 or 10N.
