Problem 4 (Spring 2007) A liquid A (density Pa = 0.8 g/cm', molar mass 80 lbm/Ib-mol) is mixed with a liquid B (density PB = 1.5 g/cm, molar mass 100 g/mol) to form a solution. There is no change of volume during mixing. a) Obtain an equation that gives the density of the solution, p. (in g/cm) as a function of the mass fraction WA of A. Except for the variables p, and was everything else in this equation must be numerical constants. b) Obtain an equation that gives the density of solution, p. (in g/cm) as a function of the mass concentration CA of A (in lbm/ft3). Except for the variables p, and cy, everything else in this equation must be numerical constants. c) 2 1b-mol of A is mixed with 1 lb-mol of B. Determine the weight fraction of A, the density of the solution (in g/cm), and the mass concentration of A (in Ibm/ft)