Tia has a sample of pure gold (Au). She weighed the sample and the result was 35.9 grams. Tia wants to determine the number of atoms in the sample. Calculate the number of atoms in 35.9 g of pure gold.

Question

Alisha

Chemistry

12 August, 00:50

Tia has a sample of pure gold (Au). She weighed the sample and the result was 35.9 grams. Tia wants to determine the number of atoms in the sample. Calculate the number of atoms in 35.9 g of pure gold.

+5

Answers (1)

Know the Answer?

Baylee Allison · Answer 1

First, find moles of gold given the mass of the sample:

(35.9g Au) / (197.0g/mol Au) = 0.182mol Au

Second, multiply moles of Au by Avogrado's number:

(0.182mol) (6.02 x10^23) = 1.10x10^23 atoms Au