378 πππ of air is isothermally compressed at 27β and 1379 ππππ; π2 = 4136 ππππ. For both nonflow and steady-flow (π1 = 23 π π , π2 = 46 π π , βπ = 0) processes, compute (a) β« πππ πππ β β« πππ (b) βπ, βπ», πππ βπ (c) π πππ πΒ
a)
"\\int pdV=\\nu RT=572.5~kJ,"
"\\int Vdp=p_2V_2-p_2V_2=-575.2~kJ,"
b)
"\\Delta U=p\\Delta V-V\\Delta p=4.8~kJ,"
"\\Delta H=\\Delta U+pV=572.5~kJ,"
"\\Delta S=\\frac UT=1.9085~\\frac{kJ}K,"
c)
"W=2\\Delta U=9.6~kJ,"
"Q=pV=575.2~kJ."
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