Two aqueous sulfuric acid solutions containing 10.0 wt% H2SO4 and 75.0 wt% H2SO4 are mixed to form a 30.0 wt% product solution. The 10.0 % solution was in a laboratory in which the temperature was 77F. The 75.0 % solution had just been taken from a storage cabinet in an air-conditioned stockroom and was at a temperature of 60F when the mixing occurred. The mass of the 10% solution is 1.45 lb. What mass of the 75.0% solution should be weighed out? (15 points) Use the enthalpy-concentration chart below to estimate the product solution temperature if the mixing is adiabatic. (15 points) 140 120 100 80 60 40 20 A(Btu/Ibm solution) -20 -40 200F -60 180 140 091 -80 120 Loo -100 60 80 -120 32F Freezing line -140 0 0.80 0.90 1.00 0.10 0.20 0.30 0.40 0.50 0.60 0.70 Mass fraction of H2SO4