Air at a pressure of 1.02 bar and temperature of 22 °C, initially
occupying a cylinder volume of 0.015 m3, is compressed reversibly
and adiabatically (i.e. isentropically) by a piston to a pressure of
6.8 bar. Calculate the: (i) final temperature, (ii) final volume, (iii)
work done on the mass of air in the cylinder, and (iv) mass of the
air in the cylinder

Air is compressed in a car engine from and in a reversible and adiabatic manner. If the compression ratio, of this piston-cylinder device is , determine the final temperature of the air. Assume the air is an ideal gas and: ,, ,    

One cylinder in the diesel engine of a truck has an initial volumeof 650 {\rm cm^{3}}. Air is admitted to the cylinder at 35{\rm^\circ C} and a pressure of 1.0 atm. The piston rod then does 500{\rm J} of work to rapidly compress the air.

a)What is its final temperature?
b)What is its final volume?

gasoline vapor is injected into a cylinder of an automobile enginewhen the opiston is in its expaned position. the temperature,pressure, and volume of the resulting gas-air mixture are 20 C,1.0x10^5, and 240 cm3, respectively. The mixture is then compressedadiabatically to a volume of 40 cm3. for the gas-air mixture,assume y(adiabatic)=140.

(a) what is the pressure of the mixture after compression?
(b) what is the temperature of the mixture after compression?
(c) how much work is done by the mixture during compression?