Nitrogen and hydrogen combine at a high temperature, in the presence of a catalyst, to produce ammonia. N₂(g) + 3 H₂(g) 2 NH3 (g) There are four molecules of nitrogen and nine molecules of hydrogen present in the diagram. When the reaction is complete, how many molecules of NH3 are produced? molecules of NH3: What is the limiting reactant? molecules of H₂: hydrogen O nitrogen How many molecules of each reactant are remain after the reaction is complete? molecules of N₂:

The balanced equation for the given reaction can be shown as follows-

The reaction suggests that 1 molecule of N₂ can react with 3 molecules of H₂ to form 2 molecules of NH₃. Based on the number of moles of reactants and products in the balanced equation, the mole ratio and thereby conversion factor to calculate the number of moles of each species can be identified.