Question

4) Determine the mass, in grams, of:

a. 8. 075 mol Au

b. 4. 20 x 10^22 atoms Na

Answer 1

a. 8.075 mol Au = 8.075 mol x 196.97 g/mol =

1594.9 g Au

b. 4.20 x 10^22 atoms Na= 4.20 x 10^22

atoms x 22.99 g/mol = 95.418 x 10^22 g Na