blem 2 - Free Response (30 points) 0 pts 0.5 kg of unknown liquid, initially at v of 0.001001 m/kg, P = 2 kPa and u = 73.431 kJ/kg, is contained within a rigid closed tank. The tank is fitted with a paddle wheel that transfers energy to the liquid at a rate of W(t) = Kt, where K is 0.3 kW/s, and t is the time in seconds. The paddle wheel is stirred over 30 seconds. The instantaneous rate of heat transfer between the surroundings and the liquid is a constant, denoted as in kW. After stirring, the liquid properties change to P2 = 85 kPa, u = 398.00 kJ/kg. There is no change in kinetic and potential energy in the tank. A. (5 pts) Draw the process on a P-v diagram. Your plots should be well-labeled, including: 1) axis titles, 2) numbered states, 3) property values corresponding to each state, 4) arrow that indicates the process's direction, and 5) units. B. (18 pts) Find 1) work in kJ and 2) heat transfer rate (Q) in kW during the process. Be sure to indicate the direction of these energy transfers (i.e., either into the system or out of the system). List the relevant assumptions to receive full credit. C. (7 pts) Determine total enthalpy of liquid in kJ at the 1) initial and 2) final states. Show your equations to receive full credit (Hint: Recall the definition of enthalpy in terms of other properties.)