One kilogram of steam is contained in a piston/cylinder device at 800kPa and 200°C. 1. If it undergoes a mechanically reversible, isothermal expansion to 150 kPa, how much heat does it absorb? 2. If it undergoes a reversible, adiabatic expansion to 150 kPa, what is its final temperature and how much work is done?

Elements Of Electromagnetics
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One kilogram of steam is contained in a piston/cylinder device at 800kPa and 200°C.
1. If it undergoes a mechanically reversible, isothermal expansion to 150 kPa, how much heat
does it absorb?

2. If it undergoes a reversible, adiabatic expansion to 150 kPa, what is its final temperature and
how much work is done? 

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