Two aqueous sulfuric acid solutions containing 20.0wt%H2SO4(SG=1.139) and 60.0wt%H2SO4 (SG=1.498) are mixed to form a 4.00 molar solution (SG=1.213). (a) Calculate the mass fraction of sulfuric acid in the product solution. (b) Taking 100kg of the 20% feed solution as a basis, draw and label a flowehart of this process, labeling both masses and volumes, and do the degree-of-freedom analysis. Calculate the feed ratio (liters 20% solution/iter 60% solution). (c) What feed rate of the 60% solution (L/h) would be required to produce 1250kg/h of the product