Question

CALCULATE mass of 2.2 x 10^20 Ag atom.
the answer is 0.0432 g but i keep getting 0.0394 g.
Somebody pls help explain this to me!

Answer 1

2.2x10^20/6.023x10^23 then multiply by mass of Ag

Answer 2

I got 0.0394 as well

Answer 3

using ratio method,
\[2.2 \times 10^{20} \text{Ag atom} \times \frac{1~mol}{6.02 \times 10^{23}atom} \times \frac{107.9g}{1mol}=0.039g~Ag\]
Your answer is correct

Answer 4

thank you!