When heated to 350C at 0.950 atm, ammonium nitrate decomposes to produce nitrogen, water, and oxygen gases: 2NH4NO3(s) --> 2N2(g)+4H20(g)+O2(g). a.) How many liters of water vapor are produced when 21.7g of NH4NO3 decomposes? b.) How many grams of NH4NO3 are needed to produce 16.0L of oxygen?