3.10. An air receiver has a capacity of 0.75 m3 and contains air at a temperature of 27°C
and pressure of 250 kN/m2. An additional mass of 1.8 kg is pumped into the receiver.
It is then left until the temperature becomes 27° C once again. Find (i) the new pressure
of the air in the receiver, (ii) the specific enthalpy of the air at 27°C ifit is assumed that
the specific enthalpy of the air is zero at 0° C.
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