$2\mathrm{.}79$ Air is compressed in the compressor of a turbojet engine. The air enters the compressor at $270$ K and $58$ kPa and exits the compressor at $465$ K and $350$ kPa $.$ Determine the mass$-$specific volume, enthalpy, and internal energy changes associated with the compression process.

$2\mathrm{.}86$ Nitrogen in a cylinder is slowly compressed from an initial volume of $0\mathrm{.}06m^3$ to

$0\mathrm{.}03m^3$ at a constant temperature of $400$ K $.$ Determine the final pressure if the

initial pressure is $500$ kPa $.$ Plot the process in $P-v$ and $T-v$ coordinates using

spreadsheet software.