posted by Sandy .
Balance. Ammonia + oxygen yields Nitrogen + water. Then, given the moles of reactant or product below, determine the corresponding amount in moles of each of the other reactants and products.
a)4 mol Ammonia
b)4 mol of Nitrogen
c)4.5 mol oxygen
4NH3 + 3O2 -> 2N2 + 6H2O
is the balanced reaction
a) 4 moles of NH3 (ammonia) require 3 of O2 to react completely. The balanced formula tells you now many moles of N2 and H2O are formed.
I am sure you can figure out the others