Nitrogen (N2) and hydrogen (H2) react to form ammonia (NH3). Consider the mixture of N2 and H2 shown in the accompanying diagram. The blue spheres represent N, and the whilte ones represent H. How many molecules of ammonia can be made, assuming the reaction goes to completion, based on the diagram? Express your answer as an integer. Part D Nitrogen (N2) and hydrogen (H2) react to form Part D ammonia (NH3). Consider the mixture of N2 and H2 shown in the accompanying diagram. The blue spheres represent N, and the white ones represent H. Are any reactant molecules left over, based on the diagram? Yes, there is excess N2. Yes, there is excess H2. No, there are no left over molecules