Question

Calculate the moles of Iron (Fe) in 3.8 x 10^{21} atoms of Iron. Please show your work

Answer 1

Answer: 6.31×10⁻³ moles Fe

Step-by-step explanation:

To calculate moles when given atoms, we need to use Avogadro's number.

Avogadro's number: 6.022×10²³ atoms/mol

`(3.8*10^2^1 atoms)*(mol)/(6.022*10^2^3 atoms) =6.31*10^-^3 mols`

The atoms cancel out, and we are left with moles. There are 6.31×10⁻³ moles Fe.