Saturated steam at 2.75 bar is throttled to 1 atm and mixed adiabatically with (and condensed by) 45 mass-% sulfuric acid at 300.15 K (27°C) in a flow process that raises the temperature of the acid to 344.15 K (71°C). How much steam is required for each kilogram mass of entering acid, and what is the concentration of the hot acid?