Question

How many moles of iron can be recovered from 100.0 kg fe3o4?

Answer 1

Hello!

To know how many moles of iron can be recovered from 100 kg of Fe₃O₄ we'll need to use the molar mass of Fe₃O₄ and apply the conversion factor to go from kg of Fe₃O₄ to moles of Fe in the following way:


`100 kg Fe_3O_4* (1000 g)/(1 kg)* (1 mol Fe_3O_4)/(231,533 g Fe_3O_4)* (3 mol Fe)/(1 mol Fe_3O_4)=1192,68 moles Fe`

So, theoretically, one could recover 1192,68 moles of Fe from 100 kg of Fe₃O₄

Have a nice day!

Answer 2

1296 moles of Fe

Step-by-step explanation:

To know how many iron can be recovered you need to know the moles of Fe₃O₄ in 100,0kg (100,0x10³g) using molar mass of Fe₃O₄ (231,533 g/mol):

Moles of Fe₃O₄:

100,0x10³g × (1mol / 231,533g) = 431,9 moles of Fe₃O₄

As molecular formula of Fe₃O₄ contains 3 atoms of Fe, you will have 3 moles of Fe per mole of Fe₃O₄. Thus, moles of Fe are:

431,9 moles of Fe₃O₄ × (3 moles Fe / 1 mole of Fe₃O₄) = 1296 moles of Fe

I hope it hepls!