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

Explanation

Molecular mass of carbon = 12 g
`6.022 xx 10^(23)` atoms of carbon have mass = 12 g .
`therefore` 1 atom of carbon has mass
`= 12/(6.022 xx 10^(23)) = 1.99 xx 10^(-23) g`