Question

3. Calculate the number of atoms in a sample of carbon that has a mass of
276.23amu.

Answer 1

1.39 x 10^25 atoms

Step-by-step explanation:

12 amu of C has 6.02 x 10^23 atoms

so 276.23 amu has

(276.23)(6.02 x 10^23)/(12) = 1.39 x 10^25 atoms