Fe(s) + O2(g) --> Fe3O4(s) When 13.54 g of O2 is mixed with 12.21 g of Fe, what mass in grams of excess reactant remains when the reaction is complete? 2 decimal places
1 Answer
Mar 3, 2018
Explanation:
We have the reaction:
So for every
Converting both to moles:
Iron:
Oxygen:
We see that oxygen is in excess. To calculate how many moles of oxygen react with the iron:
So, we know that
Converting back to mass:
Mass of oxygen: