How many moles are in 7.12 x 10^21 atoms of iron?

Question

asked Apr 17, 2022 55.5k views

1 Answer

Punov · Answer 1 · 2022-04-23T02:09:27+0000

To Find :

How many moles are in
7.12 * 10^(21) atoms of iron.

Given :

We know, 1 mole of any element or compound contains exactly
N_A ( Avogadro's Number ) atoms/compound .

Now,
N_A = 6.022 * 10^(23)

So, number of moles in given number of atoms are :

$n = (6.022 * 10^(23))/(7.12 * 10^(21))\\\\n = 1.18 * 10^(-2) \ mol$

Hence, this is the required solution.