4. Two aqueous sulfuric acid solutions containing 20 wt% H2SO4 (SG = 1.1398) and 80 wt% H2SO4 (SG = 1.7272) are mixed to form a 5.313 molar solution (SG = 1.3028). a) Calculate the mass fraction of sulfuric acid, 24, in the product solution. b) Calculate the feed ratio (liters 20% solution/liter 80% solution). c) What feed rate of the 80% solution (L/h) would be required to produce 1450 kg/h of the product?