When iron metal reacts with oxygen, the reaction can form Fe2O3. Write a balanced chemical equation for this reaction, and find the number of moles of oxygen that are needed to form 6 mol of Fe2O3. Show your work.

Question

buckybarnes · Answer

What is the balanced chemical equation be 4Fe + 3O2    ->  2 Fe2O3

geobit · Answer

Exactly : 4Fe+3O2 ->2Fe2O3

geobit · Answer

From the equation,3moles of O2 =2moles of Fe2O3.
Then, the number of moles of O2 to yield 6moles of Fe2O3 will be :
      3*(no. of moles of Fe2O3) /2
   >3(6)/2
   = 9mols  
hence 9 moles are required to give 6moles of Fe2 O3