the mass of a carbon atom is 1.994 x 10⁻²³ g the mass of the carbon sample is 12.01 g to find the number of Carbon atoms we have to divide the mass of sample by mass of a carbon atom. number of C atoms = [tex] \frac{12.01 g}{1.994* 10^{-23}g } [/tex] therefore number of atoms = 6.023 X 10²³ atoms of carbon
