THERMODYNAMICS NEED HELP ASAP please!

QUESTION 1 (25 MARKS] a) A rigid tank is divided into two parts by a partition as shown in Figure 1. The partition is removed and the gas fills the entire tank. The final state of the gas is 100 C and 350 kPa. Calculate the volume of the evacuated part (m). Ideal gas m-5 kg T-280C P-600 kPa Evacuated Figure 1 [6 Marks) [CO1, POI, C3] b) A piston-cylinder device contains 15 kg of Refrigerant-134a (R-134a) at 10C with 30% quality. Heat is transferred to the R-134a until the pressure is 800 kPa and temperature is 115 C. (1) Calculate the heat transfer during the process (k" [16 Marks) [C01, PO1, C3] (11) Sketch the process in a T-v diagram with respect to the saturation line. [3 Marks) [CO1, PO4, C3]