# Thermodynamics property calculation

## Homework Statement

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.

## Homework Equations

A state is defined by two properties. All other properties can be derived from two independent properties.

## 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.

jfizzix
Gold Member
If I had to guess, I think you are allowed to assume the air is an ideal gas, and then use the formulas for an ideal gas to figure out what you need to.

you can get the formulas by polynomial fitting. The orginal data can be calculated from www.eThermo.us

SteamKing
Staff Emeritus