Commercial concentrated of NH3(aq) is 28 percent ammonia by mass. Density of the solution =0.900 g/mL. Compute the a)molarity of the solution, b)molality of the solution, c) mole fraction of Ammonia.
Use thermodynamics to compute the enthalpy of given reaction as 2FeS2(s) + (11/2) O2(g) → Fe2O3(s) + 4SO2(g)