A piston$-$cylinder device initially contains $0\mathrm{.}60$ kg of steam at $3\mathrm{.}5$ MPa $,$

superheated by $7\mathrm{.}4C.$ Now the steam loses heat to the surroundings and

the piston moves down, hitting a set of stops at which point the cylinder

contains saturated liquid water. The cooling continues until the cylinder

contains water at $200C.$

Determine the amount of heat transfer when the piston first hits the stops $).($Round

the final answer to three decimal places.$)($Include a minus sign if necessary.$)$

The amount of heat transfer when the piston first hits the stops is

Determine the total heat transfer $($Qin$,13).($Round the final answer to three decimal places.$)($Include a minus sign if necessary.$)$

The total heat transfer is