Determine the number of representative particles in each of the following.

Question

Determine the number of representative particles in each of the following.

(a) 0.463 mol silver 

 atoms 

(b) 8.69  10^-3 mol sodium chloride 

 formula units 

(c) 38.5 mol carbon dioxide 

 molecules 

(d) 0.289 mol nitrogen (N₂) 

 molecules

Answer 1

For this problem, you will be using Avogadro's Number (or 6.022x10²³). It can be used to represent the number of atoms, molecules, formula units, etc.

IMPORTANT: 1 mol = 6.022x10²³ atoms, particles, molecules, formula units, etc.

Now that you know this conversion, you can try the first problem: 0.463 mols Ag = ? Ag atoms

0.463 mols Ag 6.022x10²³ atoms Ag

x –––––––––––––––– ≈ 2.79x10²³ atoms Ag

1 mol Ag

Use this same setup for the rest of the problems.

Does this make sense?