# Question: a gas with the properties of air moves from state...

###### Question details

A gas with the properties of air moves from state A to State B as defined by the pressure

and specific volume at these two end states. These two states are connected by a straight

line segment on a P-v diagram. The starting pressure is 1,000,000 Pa and 10 kg/m3. The

end state is 100,000 Pa and 1.2 kg/m3.

Find the following:

a. The work done by the system on its surroundings during this process.

b. The change in the internal energy of the system during this process.

c. The thermal energy added or removed through the system boundary during this process.

d. If the system expands reversibly across a movable boundary surrounded by an atmosphere

with a constant pressure of 100,000 Pa, what is the net work available from the combined system

and its atmosphere in the form of mechanical shaft work?

e. What is the change in the enthalpy of the system?

f. What is the change in the entropy of the system?