1. The problem statement, all variables and given/known data Air has a temperature of 227 Celsius and a pressure of 1000 kPa. Determine the internal energy, quality, enthalpy, and specific volume if it exists. 2. Relevant equations A state is defined by two properties. All other properties can be derived from two independent properties. 3. The attempt at a solution Ok so in theory two independent properties define the state, so I should be able to do this problem. Problem is there are no formulas relating them.....I am totally lost right now. I only know the concept, but have no tools. Anyone help me pls.