Consider the following equalibrium: 4NH3(g) + 3O2(g) <--> 2N2(g) + 6H2O(g). Suppose 0.30 mol of NH3 and 0.40 mol of oxygen are added to a 5.0-l container. If x mol of water is present at equalibrium, how many moles of ammonia will remain at equalibrium? Moles of NH3=?