A sample of ammonium nitrate when heated yields 8.96 litres of steam (measured at STP) NH4NO3 → N2O + 2H2O (i) What volume of dinitrogen oxide is produced at the same time as 8.96 litres of steam? (ii) What mass of ammonium nitrate should be heated to produce 8.96 litres of steam? (Relative molecular mass of ammonium nitrate is 80.) (iii) Determine the percentage of oxygen in the ammonium nitrate. (O = 16)