Prob. # $10]$ A piston$-$cylinder device contains steam initially at $0\mathrm{.}8$Mpaa,$300C$ and $0\mathrm{.}5m^3.$ Steam is allowed to cool at constant pressure until it first starts condensing. Determine a$)$ the mass of the steam; b$)$ the final temperature; c$)$ the work done; and d$)$ the heat transfer during the process.

Prob. # $11]$ Steam enters the turbine at $1\mathrm{.}2$Mpaa,$380C,$ and exhausts the turbine at $5$kPaa,$95\%$ quality. If the turbine rejects $30$ kW of heat and the mass flow rate of steam is $20k\frac{g}{s},$ determine a$)$ the degrees of superheat of the steam entering the turbine; b$)$ the temperature of the steam leaving the turbine; and c$)$ the turbine power in kW$.$