Question

If one mole of carbon atoms weighs 12 gram then find one atom of carbon in grams

Answer 1

One mole of carbon atoms weighs 12 gram. i.e. 6.022 x 1023 atoms of carbon weigh 12 gram. Therefore, 1 atom of carbon weighs 12 / (6.022 x 1023) = 1.993 x 10-23 gram.