Question

How many atoms are in 35.12 grams of gold?

Please show your work

Answer 1

Answer: 1.08 x 10^23 atoms

Step-by-step explanation:

To find the no of moles in 35.12g of Au

no. of moles = mass/atomic mass

= 35.12/197

= 0.18 moles

1 mole of Au = 6.02 x 10^23

0.18 moles of Au = 0.18 x 6.02 x 10^23

=1.08 x 10^23 atoms