Question

1. A sample of gold (Au) has a mass of 35.12 g.

a. Calculate the number of moles of gold (Au) in the sample and record in
Table 1. Show your work.

b. Calculate the number of atoms of gold (Au) in the sample and record
in Table 1. Show your work.

Please show your work this is Chemistry!

Answer 1

 a. Moles of gold = 35.12/197 = 0.18 moles. b. number of gold molecules = moles x 6.02 x 10^23 = 0.18 x 6.02 x 10^23= 1.08 x 10^23