Pressure Formula Homework: Solve 0.9/0.9 +0.1 = 0.9

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The discussion revolves around solving a thermodynamics problem involving pressure and quality. The user has calculated the quality as 0.9 but is uncertain about the next steps and the appropriate formulas to use. They mention needing to determine the initial temperature and consider using property tables for saturated water. At a pressure of 800 kPa, they identify the saturated temperature as 170.41 degrees Celsius. The conversation emphasizes the importance of understanding thermodynamic principles and utilizing relevant tables for accurate calculations.
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Homework Statement


I've attached the question.


Homework Equations





The Attempt at a Solution


Okay i have figured out the quality, which is 0.9/0.9 +0.1 = 0.9.
after that I am not sure. What formula/s should I be using??
 

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What is the course? Is the problem from your textbook?
 


its thermodynamics and no its not from my textbook. For part a) i couldn't find a formula or anything that helps me work out the initial temperature. I'm thinking that i have to use the property tables for saturated water, and at 800kPa the saturated temperature is 170.41.would that be correct?
 

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