Question

A chemist pours 1 mol of zinc granules into one beaker and 1 mol of zinc chloride powder into another beaker. What do the two samples have in common?

Answer 1

The number of Zn particles (atoms of Zn ) in the first sample, and Zn ions are going to be the same, 
Also mass of Zn are going to be the same, because of electrons are too small, and would not have influence on mass.

Answer 2

Answer:

Both of them have 1 mole of zinc.

Explanation:

Hello,

In this case, if we analyze these two situations via stoichiometry, we are going to realize there is 1 mol of zinc in both of them as shown below:

$n_{Zn,granules}=1molZn\\n_{Zn,ZnCl_2}=1molZnCl_2*\frac{1molZn}{1molZnCl_2} =1molZn$

This is substantiated by knowing there is only one zinc atom in the zinc chloride, therefore, one mole is found as well as in the zinc granules which is just pure zinc.

Best regards.