#### 1 kg of ethane (perfect) gas is compressed from 1.1 bar, 27 °C according to a law pV^{1·3} = constant, until the pressure is 6.6 bar. Calculate the heat flow to or from the cylinder walls. Given : Molecular weight of ethane = 30, c_{p} = 1.76 kJ/kg K.

1 kg of ethane (perfect) gas is compressed from 1.1 bar, 27 °C according to a law pV^{1·3} = constant, until the pressure is 6.6 bar. Calculate the heat flow to or from the cylinder walls.

Given : Molecular weight of ethane = 30, c_{p} = 1.76 kJ/kg K.

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