The limiting reactant is nitrogen.
In a chemical reaction, two or more species combine to form products. The amount of all the reactants in the system are usually not the same. The specie that is present in the least amount is called the limiting reactant. The reactant that is present in the greatest amount is called the reactant in excess.
Looking at the image, there are six oxygen molecules and two nitrogen molecules hence nitrogen is the limiting reactant and oxygen is the reactant in excess.
Since the equation of the reaction is; 2N2 + 4O2 --->2N2O4, it follows that there are two excess oxygen molecules that are left unreacted. Two N2O4 molecules are formed.
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Missing parts:
The illustration to the left represents a mixture of nitrogen (blue) and oxygen (red) molecules.
If the molecules in the above illustration react to form N2O4 according to the equation N2 + 2O2 N2O4
the limiting reagent is___?___
the number of N2O4 molecules formed is___?___
the number of___?___molecules in excess is___?___
