1 k mol of N2 gas (ideal) is contained in a piston initially at 300K with a volume of 0.1 m^3. the piston cylinder is well insulated. a microwave gum then heats the gas fro 30 seconds, where the power of the microwave gun is 10MW and the absorbtion coefficient of gas is sigma=.1 durning the micorwave heating the N2 gas expands at constant pressure.
A) what is the inital pressure of the gas
B) what is the final temperture of the gas assuming the heat capacity is constant?
C)What is the final temperature from the cahnge in enthalpy?
D) what is valume of the gas after heating
E) what is the change in entropy using the 1s Tds relation? assuming Cv(T)=Cv(@T1)
F) what ist he change in entropy using the 2nd Tds relation?
G) what is the change in entropy using the 2nd Tds relation? assuming Cp(T)=[Cp(@T)+Cp(@T2)]/2
H) what is the change in entropy using the 2nd Tds relation? using S2 and S1
I) what is the work done by the gas?