How many atoms of iron are there in 1 moles of wolframite FeWO4?

As it can be seen from the molecular formula of wolframite that is FeWO₄, that there is one mole of iron that is Fe in 1 mole of wolframite (FeWO₄).

1 mole of Fe = 1 * 6.023 * 10 ²³ atoms of Fe

So there are 6.023 * 10 ²³ atoms of Fe are there in 1 moles of wolframite, FeWO₄.

So number of atoms of iron is 6.023 * 10 ²³ in 1 moles of wolframite, FeWO₄.