Hi Im having trouble finding the state of a process in thermodynamics from the question for example I have a question that asks 10-kg of R-134a at 300 kPa fills a rigid container whose volume is 14 L. Determine the temperature and total enthalpy in the container. The container is now heated until the pressure is 600 kPa. Determine the temperature and total enthalpy when the heating is completed. I dont want to know how to solve the problem I just need help understanding it. The solution states that it this solution is a mixture and thus the temperature is the saturation temperature at the given pressure. What I would like to know is how do we know from what is given that this is a mixture. Thanks a lot.