Question

A high temperature reaction vessel is charged with 0.5860 mol of iron powder and 35.1 L of oxygen gas at standard temperature at pressure. On heating, the iron and oxygen react according to the balanced reaction below.
4Fe(s) + 3O2(g) → 2Fe2O3(s)
After the reaction vessel is cooled, and assuming the reaction goes to completion, what volume of oxygen remains?
A) 25.3 L
B) 35.1 L
C) 17.6 L
D) 9.84 L
E) 0.293 L

Answer

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