Problem 4: Two streams containing species A are blended in a well stirred tank (see figure below). A stream also exits the tank as shown in the figure. Stream 1 Pi(t), X (t), V (t) Stream 3 P:(t), X (t), V (t) Stream 2 pa(t), X(t), V 2(t) The density, mass fraction of A and volumetric flow rate of the streams are denoted by p, X and Y , respectively. The volume of the tank is denoted V(t). Write an unsteady state material balance on total mass and on the mass of species A for the above system using the indicated variables (including V(t)) and assume that no chemical reaction occurs