If one mole of carbon atoms weighs 12 gram, what is the mass (in gram) of 1 atom of carbon?

One mole of carbon atoms weighs 12g   (Given)

i.e., mass of 1 mole of carbon atoms = 12g

Then, mass of 6.022× 10²³ number of carbon atoms = 12g

Therefore, mass of 1 atom of carbon ={12\over6.022×10^{23}} g

= 1.9926 × 10^{– 23} g