4 liter water with temperature 10 Celcius is mixed with 4kg liquid with temperature 40 Celsius. The Specific heat capacity of the liquid is half of the water. What is the equilibrium temperature?

Nitrogen (n2) undergoes an internally reversible process from 6 bar, 247°c during which pν1.2 = constant. the initial volume is 0.1 m3 and the work for the process is 121.14 kj. assuming ideal gas behavior, and neglecting kinetic and potential energy effects, determine heat transfer, in kj, and the entropy change, in kj/s. show the process on a t-s diagram.