The work required to perform polytropic compression of an ideal gas (Pvn = constant, where 1 < n < k ) is always more than the work required for _______ compressionQuestion 6Select one:a.isentropicb.isothermalc.none of the above

0.15M3 of air is compressed from a pressure of 100kN/M2and a temperature of 20°C to apressure of 1.5MN/M2 according to the law PV1.2=CSketch this on a PV diagram (3 marks)Findi) The work done during compression.Is the work done by or on the gas?

Consider an ideal gas that occupies 2 L at 1 bar. The gas is compressed isothermallyto 0.5 L at a constant pressure of 4 bar. This is followed by another isothermalcompression to 0.25 L at a constant pressure of 8 bar. Calculate the work involved inthis two-step compression. Calculate and compare the work if the same gas wascompressed 2 L to 0.25 L in a reversible, isothermal manner.

For a polytropic process PV^n = constant, Cm (molar heat capacity) of an ideal gas is given by

An ideal gas at a given state expands to a fixed final volume first at constant pressure and then at constant temperature. In which case is the work done greater?Group of answer choicesConstant volumeConstant pressureNone of themConstant temperatureNext

Sketch a PV diagram and find the work done by the gas during the following stages.(a) A gas is expanded from a volume of 1.0 L to 7.5 L at a constant pressure of 5.0 atm. J(b) The gas is then cooled at constant volume until the pressure falls to 1.5 atm. J(c) The gas is then compressed at a constant pressure of 1.5 atm from a volume of 7.5 L to 1.0 L. (Note: Be careful of signs.) J(d) The gas is heated until its pressure increases from 1.5 atm to 5.0 atm at a constant volume. J(e) Find the net work done during the complete cycle. J