How many atoms of iron are there in 2.01 moles of wolframite FeWO4

If there are two moles of wolframite, which includes one mole in the formula, multiply the amount of moles in the formula by the amount of moles you have.

1 mol of iron in wolframite x 2 moles of wolframite = 2 moles of iron

There are 6.022 x 10^23 atoms in a mole of any element.

2 x 6.022^23 = 1.2044^24 iron atoms