How many grams do 5.2×10^20 atoms of silicon weigh?

Question

Answer in units of g.

Answer 1

5.2E20 atoms x (1 mole/6.022E23) = ??moles Si.
1 mole Si has a mass of 28.1 g; therefore, ??mols will have a mass of______g?

Answer 2

.02

Answer 3

0.024g

Answer 4

4.89x10 E21