I need help with all of this. I have no idea what I am doing. I came back from vacation and confused. Please Help.

Answer:
2.3 X 1024 atoms / 6.022 X 1023 atoms/mole X 107.87 gm/mole of silver = 412 grams
Explanation:
2.3 X 1024 atoms / 6.022 X 1023 atoms/mole X 107.87 gm/mole of silver = 412 grams