Question

A gold bar contains 63.0 mol of gold, Au(s). How many atoms of gold are in the bar?

Answer 1

Answer:

63.0 x (6.02 x 10^23) = 3.79 x 10^25 atoms of gold

Explanation:

There are 6.02 x 10^23 representative particles in a mole of any substance. Multiply it by the number of moles, and you will get the number of representative particles (atoms, molecules, formula units)