No, you can not use the ideal gas equation where you have a phase change, you need a set of steam tables and only steam tables.
< If water is in a container and it is 75% vapor and 25% liquid and im only given the pressure. >
So you know the temperature from the steam tables. You know the density of the steam from the steam tables. In the second part, the mixture is 100% so all the water is now steam. Assuming the volume of water is insignificant (a very reasonable assumption), find the temperature of a saturated mixture of steam where the density is 1.33x the value in the first part (because if you convert the 25% water to steam, you will have 1.33x more mass of steam than in the previous step, density = mass / volume).
· 1 month ago